课程文献中心 更多>>

关键词： 混源   操作系统   供应链安全   风险因素  

摘要： 当前软件供应链安全事件频发,对其进行安全风险评估可以发现潜在风险,这是管理安全风险和预防安全事件的重要手段之一。作为信息系统的核心基础软件,混源操作系统广泛应用于政务、电力、金融和通信等重要领域,其供应链安全风险引起业内的高度重视。混源操作系统具有代码来源多样、代码规模大、结构和组件依赖关系复杂的特点,而现有的软件供应链安全风险评估方法不够完善,用于评估供应链安全风险的评估指标不完全适用于混源操作系统。为了解决该问题,文章提出了供应链安全的可溯性、可用性和安全性保障目标,根据这些保障目标分析影响混源操作系统供应链安全的风险因素,并设计了一个可度量的指标体系以评估其安全风险。文章通过实例验证了该指标体系的有效性,并总结阐述了一些可用于评估重要指标的相关技术手段和工具。

关键词： 可循环   可循环快递包装箱   操作系统  

摘要： 互联网及交通运输的发展极大地促进了网购与快递的发展,快递的发展也带来了一系列的资源浪费和环境污染问题。为解决快递包装产生的问题,结合目前国内外现有的可循环快递包装,进行了可循环快递包装设计。根据商品价值的不同,将可循环快递包装分为基础款和智能款,并以J公司为例,设计出工作人员使用的操作系统和用户使用的解锁系统。可循环快递包装的推广和使用不仅能够提升用户体验,而且能够帮助企业降本增效,承担更多的社会责任。

关键词： Linux平台   人工智能   操作系统   软件定义   道路车辆   汽车行业   专业知识   持续认证  

摘要： 近日,2023年红帽全球峰会召开,红帽公司在峰会上进行了一系列发布。其中,人工智能和汽车行业相关的发布最为引人瞩目。早在2021年,红帽与exida携手,对红帽汽车Linux产品进行持续认证。为联网汽车市场带来持续的、可更新的基于RHEL的操作系统。红帽希望与exida的合作推出基于Linux、持续认证的道路车辆操作系统,从而将自身的专业知识和企业Linux平台的优势带入汽车行业。2022年,红帽公司在全球峰会上宣布和通用汽车合作,双方联手在边缘推进软件定义汽车的发展.

关键词： 技术创新中心   四川农业大学   科研骨干   联合办学   论文答辩   澳大利亚昆士兰   刘江   课程实践  

摘要： “我刚从农场回来。”见到满口“农”味的刘江,是在四川农业大学雅安校区。当下这段时间,刘江很忙。作为农业专家,他要去附近区县培训农技人员,示范推广大豆玉米带状复合种植技术;作为团队科研骨干,他正协调全国多家单位,联合共建大豆玉米带状复合种植技术创新中心;作为研究生导师,毕业季即将来临,他要指导学生论文答辩;作为四川农业大学生命科学学院副院长,他近期要全面推进学院有组织科研,落实科研团队“学术述职”,主持本科非涉农专业的《劳动教育》课程实践和澳大利亚昆士兰大学联合办学交流参访……

关键词： 安全策略   账号   注册表   服务  

摘要： 为了获得最佳安全的网络环境,需要正确配置每一台计算机。本研究以Windows10操作为例,分别从账号、用户、组和口令的设置,安全策略的设置,注册表的设置,系统服务的关闭/启动等方面对其进行了全方位的安全加固。对系统管理员有一定的参考依据。

关键词： 操作系统   实验平台   有效出勤   抄袭检测  

摘要： 操作系统是计算机相关专业最重要课程之一。实验课是操作系统教学的重要环节。针对现有实验平台不友好、学生实验课普遍不专心、代码抄袭严重、实验结果反馈不及时等问题,本文提出构建一个友好的本地服务器作为操作系统实验平台,并通过统计学生服务器在线时长进行更有效的出勤考核,通过记录学生文件的变化来甄别抄袭行为,使用程序辅助评分及时给学生反馈。实践表明,综合使用这些方法可以很好地敦促学生认真完成实验,进而提升教学效果。

关键词： 激光产品   投影机   国际数据公司   第四季度   声学技术   操作系统   IDC   出货量  

摘要： 据IDC(国际数据公司)发布的《IDC 2022年第四季度中国投影机市场跟踪报告》显示,2022年中国投影机市场总出货量为505万台,同比增长7.4%。其中,智能投影机(搭载独立操作系统)的出货量为377.5万台,占总出货量约75%,同比增长15.2%。可以看到,智能投影机的占比非常高。具体到品牌,极米、坚果、峰米、当贝、爱普生跻身出货量前5名。特别是在激光产品领域,峰米和当贝处于领先地位。峰米之前曾推出过多款激光产品:S5、X1、4K Max、Cinema 2、T1,近期又推出了一款万元左右的4K激光投影机,号称是同类产品中亮度更高的智能投影机,并且还采用了天龙音响的声学技术。它的实际表现如何?我们进行了深度体验。

关键词： Linux操作系统  

ISBN: (纸本)9787302631705

摘要： 本书介绍操作系统的核心功能——用户接口、进程管理、处理机调度与死锁、存储管理、设备管理、文件管理、多处理机系统、嵌入式操作系统、操作系统安全；以Linux为例，分析操作系统的核心代码的实现方法、技术以及操作系统各个功能部分的关联实现技巧；在此基础上，从操作系统的发展需求及计算机体系结构的发展角度介绍当前操作系统发展的新趋势。

摘要： A branch of cyber security known as memory forensics focuses on extracting meaningful evidence from system memory. This analysis is often referred to as volatile memory analysis, and is generally performed on memory captures acquired from target systems. Inside of a memory capture is the complete state of a system under investigation, including the contents of currently running as well as previously executed applications. Analysis of this data can reveal a significant amount of activity that occurred on a system since the last reboot. For this research, the Windows operating system is targeted. In particular, the graphical user interface component that includes the taskbar, start menu and notification system will be examined for possible forensic artifacts. The techniques presented in this research are valuable to a forensic investigator trying to find evidence. They are also useful for penetration testers trying to determine if a tool has left any evidence behind for investigators to find. The research described in this thesis led to development of a scanning technique that served as the basis for a Volatility plugin that automates finding GUI related artifacts. To support this research, a lab consisting of three virtual machines (VM) was created using VMware. Two Windows 10 virtual machines were created for generating artifacts and one Linux was created for scanning the Windows machines. These machines were connected to a live router briefly for gathering network information. This these explores the strengths and limitations of this searching discovered during research. Lastly, future applications of this research are covered.

摘要： Modern computer systems have become fairly complex in nature; they require long development cycles and often require thousands of engineers to build and verify. In such a setting, design from scratch (ab initio design) has been replaced by a modular design process, where prebuilt components possibly sourced from third parties are used as much as possible. The role of devel- opers is limited to system integration and coding parts of the system that are particularly novel. Given the extensive verification effort that is involved these days along with concerns about re- liability and security, vendors are hesitant to make revolutionary changes in hardware/software offerings. The trend is to make evolutionary changes – small improvements with disproportion- ate benefits. The classical method to do such research is to thoroughly analyze a system, find and analyze bottlenecks, and then try to propose a better solution. However, the benefits of such approaches are quickly diminishing and given the scale of today's systems starting from smart watches to servers, bottom up approaches are proving to be very challenging. Hence, we propose to look at comparative approaches where we compare the execution of two systems keeping a large part of the execution environment the same. The comparative analysis can help us pinpoint which design choices exactly lead to better performance in a set of workloads. We choose two concrete problems in this space and show that such comparative approaches yield solutions that significantly outperform the state of the art. The problems are ISA design and OS design. We start with a quintessential problem: design an ISA for a workload with realistic constraints in mind such as minimal changes to an existing ISA. We propose a simple graphical approach that helps us nicely visualize the execution of a program. It helps us identify the issues with an ISA and also what custom instructions can be added to disproportionately increase the performance of the