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关键词： MOOC   高等数学   翻转课堂   教学模式  

摘要： 随着我国高职教育的飞速发展和教育信息化的推广,新的教学资源、教学模式被不断引入和实施。翻转课堂为高等数学教学模式提供了借鉴,MOOC课程兴起也为高等数学课程教学改革提供了思路,在该教学模式的运用下,能够进一步满足当代学生对于信息化教学的综合需求,在提升学生学习兴趣的同时对学习效率进行提升。此外,翻转课堂在当前高校教学中同样存在有较高的使用率,按照MOOC与翻转课堂相结合的方式,将其融入高等数学教学中,能够帮助学生更好地掌握对应知识。

关键词： 混合教学模式   在线学习   雨课堂   数学软件  

摘要： 高等数学作为大学数学知识体系核心课程,对培养学生的数学思维和促进专业发展有着重要的作用。为了提高高等数学的教学效果以及学生的自主学习和创新能力,该文通过高等数学课程的实施现状和线上资源优势,引入线上线下教学资源融合的高等数学混合教学模式,通过实践探索出一套改善高等数学教学质量、提高学生学习和实践能力的有效可行方案,为大学同类课程的教学改革提供了一种借鉴和参考模式。

关键词： STEM   教学理念   跨学科   高等数学  

摘要： 本文结合应用型本科院校高等数学教学现状,探讨了高等数学教学中融入STEM教育理念的必要性,并基于STEM教育理念,从教学内容、教学方法、教学模式和评价体系四个方面进行了改革探索,进而提出高等数学改革中需要解决的关键问题及策略。

关键词： 高等数学   混合教学模式   独立院校  

摘要： 线上线下混合教学模式是一种在新形势下与互联网相适应的全新教学理念,它将传统的课堂教学模式的优势和网络化教学的优势结合起来.高等数学是高等院校各专业学生重要的基础必修课.本文分析了独立院校高等数学教学的现状,介绍了线上线下混合教学模式,以第一类换元积分法为例进行了线上线下混合教学模式的实践,得到了良好的效果.

关键词： Android malware detection   static analysis   OpCode-level FCG   deep learning   LSTM  

摘要： Due to the openness of an Android system, many Internet of Things (IoT) devices are running the Android system and Android devices have become a common control terminal for IoT devices because of various sensors on them. With the popularity of IoT devices, malware on Android-based IoT devices is also increasing. People's lives and privacy security are threatened. To reduce such threat, many researchers have proposed new methods to detect Android malware. Currently, most malware detection products on the market are based on malware signatures, which have a fast detection speed and normally a low false alarm rate for known malware families. However, they cannot detect unknown malware and are easily evaded by malware that is confused or packaged. Many new solutions use syntactic features and machine learning techniques to classify Android malware. It has been known that analysis of the Function Call Graph (FCG) can capture behavioral features of malware well. This paper presents a new approach to classifying Android malware based on deep learning and OpCode-level FCG. The FCG is obtained through static analysis of Operation Code (OpCode), and the deep learning model we used is the Long Short-Term Memory (LSTM). We conducted experiments on a dataset with 1796 Android malware samples classified into two categories (obtained from Virusshare and AndroZoo) and 1000 benign Android apps. Our experimental results showed that our proposed approach with an accuracy of97%outperforms the state-of-the-art methods such as those proposed by Nikola et al. and Hou et al. (IJCAI-18) with the accuracy of97%and91%, respectively. The time consumption of our proposed approach is less than the other two methods.

关键词： 高等数学   高等学校   教材  

ISBN: (纸本)9787568062947

摘要： 本书的强调理论与实际应用相结合，突出有关章节的应用性；该书中编入了MATLAB软件在高等数学中的应用；在内容的表述方式上，不像对数学系专业学生的要求那样严格，而是将数学语言在某些地方“通俗化”，做到了简单、明了、直白。 本书是为了适应培养应用型的大学本科经济管理类人才的要求而编写的基础课教材，系统地介绍了有关微积分的知识，选编了相当数量的典型例题，特别介绍了一定数量的经济应用例题，以提高读者运用数学知识处理实际经济问题的能力.本书内容包括常微分方程与差分方程、向量代数与空间解析几何、多元函数微分、二重积分、无穷级数.

关键词： 高等数学  

ISBN: (纸本)9787564780869

摘要： 《高等数学》在介绍函数和极限概念的基础上，利用极限概念分别引出了导数与积分的运算及其方法，利用微积分解决工程技术、经济领域及其他实际问题的方法，将常微分方程、无穷级数与矩阵等内容应用于解决实际问题的方法，最后介绍了利用数学实验去解决实际问题或者解决比较复杂的微积分问题的方法。本书注重突出应用，各章通过例题，介绍解题思路，学会建立数学模型的方法。每章内容的合理安排目的是为了巩固所学知识，逐步提高读者用高等数学的方法去分析问题和解决问题的能力。本书可作为应用型本科院校、高等职业院校计算机学科或工程类专业的教材……

关键词： Adaptive power reference function   DFIG   Frequency stability   Rapid rotor speed recovery   Short-term frequency support  

摘要： With increasing penetration levels of electronic-converter-interfaced wind generation, the system frequency stability deteriorates. The rotation kinetic energy stored in a doubly-fed induction generator (DFIG) can be released to support frequency stability. This paper presents an improved short-term frequency support (STFS) method of a DFIG to improve the frequency nadir using less kinetic energy and accelerate the rotor speed recovery with a negligible second frequency drop (SFD). To this end, after adding a constant to the reference for the maximum power point tracking operation, the proposed method suggests an adaptive power reference function, which decreases with time and the rotor speed without the rotor speed convergence stage. Case studies for low and high constant wind speeds and a consecutive disturbance are carried out to verify the effectiveness of the proposed method. Simulation results demonstrate that the proposed method can improve the frequency nadir even though less kinetic energy is released, and can solve the issue of rapidly recovering the rotor speed to the optimal value without causing a large SFD, thereby harvesting more mechanical power from wind. Furthermore, the proposed method can achieve better performance in providing frequency support than the present method even for a consecutive disturbance. Thus, this proposed method provides a promising solution for the STFS ancillary service of a DFIG and facilitates wind power accommodation.

ISBN: (纸本)9787549374137