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关键词： 可信计算   可信计算基   操作系统加固   可信度量  

摘要： 可信计算是当前信息安全领域的一个全新课题,它为计算机系统的信息安全提供主动防御的解决方案。本文以可信计算技术的基本概念为基础,介绍了可信计算在操作系统安全加固领域的研究情况,通过对当前信息系统存在的安全漏洞分析,对安全加固方案进行研究,实现计算机系统的安全。

关键词： “3+4”分段培养模式   计算机科学与技术专业   操作系统教材   课程资源  

摘要： 阐述了计算机科学与技术专业“3+4”分段人才培养模式中操作系统课程资源的开发步骤。在分析教学内容、教材、文献资料,以及对中职教师调研和进行师生座谈的基础上,编写出操作系统课程教学大纲,进而确定编写操作系统教材的详细计划及数字化资源建设内容。在“3+4”本科阶段试用了该课程资源,取得良好效果。

关键词： 教学操作系统   课程设计   实验平台   模拟器  

摘要： 动手实践是学好操作系统最有效的学习方法,应在操作系统实践教学中注重课程设计的开设,首要任务就是选择合适教学操作系统。针对国内外常见的教学操作系统进行了分类,指出各自的特点,分析在平台上开设课程设计的状况,列举不同层次高校的课程设计内容。以此为借鉴,选择适合本校学生的教学操作系统进行课程设计。

关键词： 操作系统   主体对象   安全上下文   信息安全  

摘要： 基于内核2.6Linux操作系统环境,阐述SELinux的工作原理,分析安全的上下文格式及作用、安全策略的设置、SELinux灵活配置服务、从而提高Linux网络操作系统的安全性。

关键词： Linux操作系统  

ISBN: (纸本)9787121398728

摘要： 本书共分为基础篇 ; 系统管理篇 ; 编程与开发篇 ; 网络服务与应用篇几部分, 共19章, 主要内容包括: 系统简介 ; 系统入门 ; shell与shell基本操作 ; 用户、组和密码管理等。

关键词： Acoustic voice analysis   Smartphone   Tablet   Voice disorder   Real-time   Harmonics-to-Noise ratio  

摘要： Objectives. We developed a highly accessible acoustic voice analysis system (VArt) using a handheld device running Android operating system. To provide stable and reliable analysis using readily obtainable equipment under unfavorable conditions, we modified the fundamental frequency (F0) extraction algorithm and designed an intuitive user interface representing a new hoarseness index (real-time Ra: Rart), which is a derivative of harmonics-to-noise ratio developed by Kojima and Shoji (Ra2). Since Rart continues to display analysis results in real time, unlike conventional acoustic analysis, it can be used for evaluation such as during phonosurgery and speech therapy. We evaluated the agreement between the earlier version of acoustic voice analysis software (VA) running on a Windows personal computer and VArt running on a handheld device. Methods. F0, Ra2, and Rart were measured in voice samples of sustained vowel phonation /a/ from 10 healthy volunteers and 22 patients with voice disorders using VA running on a Windows personal computer and VArt running on two types of handheld devices in a sound-treated room or in a medical examination room. Intraclass correlation coefficients were calculated for both systems under both conditions. Results. All of the comparisons were highly correlated. Conclusions. Measurements obtained using our newly developed VArt were highly consistent with those using VA, indicating high reliability. Moreover, the new system increases the clinical feasibility of acoustic voice analysis.

摘要： In this thesis, we address the problem of schedulers for multi-core architectures from several perspectives: design (simplicity and correctness), performance improvement and the development of application-specific schedulers. The contributions presented are summarized as follows: - Ipanema, a domain-specific language dedicated to thread schedulers for multi-core architectures. We also implement a new abstraction in the Linux kernel that enables the dynamic addition of schedulers written in Ipanema. - a series of performance and bug tracking tools. Thanks to these tools, we show that the Linux scheduler, CFS, suffers from a problem related to frequency management on modern processors. We propose a solution to this problem in the form of a patch submitted to the community. This patch allows to significantly improve the performance of numerous applications. - a scheduler model in the form of a "feature tree". We implement these features independently in order to offer a new fully modular scheduler. This modular scheduler allows us to study exhaustively the different combinations of features, thus paving the way for the development of application-specific schedulers.

关键词： 操作系统   网络空间安全   教学改革   实践能力培养   自主可控  

摘要： 针对传统操作系统原理教学存在着理论联系实际不强、教学信息相对技术发展较为滞后且专业性不匹配等问题,分析课程改革必要性,提出"三维立体式"的教育改革思路,介绍面向网络空间安全专业本科生的操作系统课程改革措施,最后说明改革效果。

关键词： 操作系统   安卓应用   国产平台   安全等级   自主可控   V10   安全基石   无缝迁移  

摘要： 前不久,国产操作系统银河麒麟V10面世,引发业界和公众关注。这一操作系统不仅可以充分适应5G时代需求,其独创的kydroid技术还能支持海量安卓应用,将300万余款安卓适配软硬件无缝迁移到国产平台。专家表示,银河麒麟V10作为国内安全等级最高的操作系统,是首款实现具有内生安全体系的操作系统,成功打破了相关技术封锁与垄断,有能力成为承载国家基础软件的安全基石。

关键词： 操作系统   Windows   Linux   Mac OS  

摘要： 操作系统已进入大型计算机、个人计算机、移动便携式设备等各个层次的应用领域,在几十年中各种操作系统应运而生。文章对比分析了Windows、Linux、Mac OS主流操作系统,为选型给出依据。