为解决好专业教育和思政教育"两张皮"问题,落实立德树人根本任务,结合信息安全专业特色、计算机网络教学内容及学情分析,提出"情智交融"的思政教学设计思路,沿循"挖掘—优化—促进—反哺"路径最终达成培养目标,阐述如何结合教学内容深挖思政元素,并以ARP教学内容为例,介绍计算机网络课程思政教学实践.

针对计算机网络应用技术课程存在的偏重理论知识、教学模式单一、与部队贴合不紧等问题,从课堂教学、实验安排、课外项目三部分出发,探究课程改革方案,推行翻转课堂、微课教学、以赛促学的教学新方法,并编写了配套教材.实践表明,改革后学生对课程的满意度及综合能力均得到较大提升.

国内针对社会稳定形势的分析工作主要集中在理论、体系、指标构建方面,定量分析研究较少.提出了基于网络敏感信息挖掘、精确语义匹配和量化分析的社会稳定形势监控技术框架.对互联网新闻文本中与社会环境、民族和谐、民生幸福相关的敏感信息进行挖掘,识别热点关键词以及由该词引导的敏感事件的变化趋势,构造敏感信息知识库;建立社会稳定理论模型和计算模型,利用社会调查和迭代反馈分析法习得模型参数,实现社会稳定形势的定量评估.基于该技术构造了原型系统,对新疆、西藏等边疆六省份社会稳定形势定量分析的平均准确率达到73.72％,具有一定决策参考价值.

计算思维着眼于问题求解和机器实现,强调运用计算机解决问题的能力.从培养军校学员计算思维能力出发,对“计算机网络”课程教学进行了探讨和研究,采用内容重组、创新教法与学科融合相结合的方式,将思维训练融入教学实践.统计结果显示,新的教学模式能使学员更高效、更深入地理解和掌握计算机网络的基本概念、原理和体系结构,提升学员的综合素质和创新能力.

For the shortcomings of an obvious influence on the histogram of the image in the traditional LSB(least significant bit) algorithm,this article put forward a kind of improved histogram groups based algorithm through the research about the histogram change in the LSB embedding process and the Markov security model.The algorithm embedded by pairs of two adjacent gray value pixels after the DCT quantization,and then embedded the left coefficients according to the Markov security.Experimental results indicate that this method ensures a larger embedding capacity,keeps the histogram characteristics effectively and improves the statistics and analysis performance.

为解决已有自更新Hash链方案中根s信息泄漏的问题,构造了一种基于几何方法的自更新Hash链.方案利用"已知n维空间圆上n+1个不同点,可以唯一确定这个圆的方程"的数学原理,提出了一种数据分离一恢复方案,用于构造自更新Hash链.该设计方案计算简单,具有较高的安全性,而且可以在最多n个点不变的情况下,修改根s.

In order to enhance the efficiency of data access and resolve the problems of existing quorum systems,such as no differerce between the nodes,great latency in data access and low storage utilization,this paper presented a new quorum sys- tem based on privileges classification of all nodes. The system adjusted each quorum dynamically by means of the usage of proxy. Besides,divided the nodes of the system into different grades according to data storage time,and designed the corre- sponding data read and write protocols. As a conclusion of the system performance analysis,it shows that the scheme has the advantages of high data access efficiency,storage reliability,flex to be extended and so on.