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关键词： 大数据理念   教师专业发展   评价要素   评价系统   操作系统  

摘要： 科学的评价系统是有效促进教师专业发展的保障。调查研究表明,依托基于大数据理念遴选的教师专业发展评价要素,可以建构科学的教师专业发展评价系统。在这一评价系统基础上架构的教师专业发展评价操作系统具有动态统计功能、大数据交互评价功能和网络查询功能,有助于促进教师主动提升专业素养,推动教师团队的整体发展。

摘要： Criticality of a software system refers to the severity of the impact of a failure. In a high-criticality system, failure risks significant loss of life or damage to the environ- ment. In a low-criticality system, failure may risk a downgrade in user-experience. As criticality of a software system increases, so too does the cost and time to develop that software: raising the criticality also raises the assurance level, with the highest levels requiring extensive, expensive, independent certification. For modern cyber-physical systems, including autonomous aircraft and other vehicles, the traditional approach of isolating systems of different criticality by using completely separate physical hardware, is no longer practical, being both restrictive and inefficient. The result is mixed-criticality systems, where software applications with different criticalities execute on the same hardware. Sufficient mechanisms are required to ascertain that software in mixed-criticality systems is sufficiently isolated, otherwise, all software on that hardware is promoted to the highest criticality level, driving up costs to impractical levels. For mixed-criticality systems to be viable, both spatial and temporal isolation are required. Current aviation standards allow for mixed-criticality systems where temporal and spatial resources are strictly and statically partitioned in time and space, allowing some improvement over fully isolated hardware. However, further improvements are not only possible, but required for future innovation in cyber-physical systems. This thesis explores further operating systems mechanisms to allow for mixed- criticality software to share resources in far less restrictive ways, opening further possibilities in cyber-physical system design without sacrificing assurance properties. Two key properties are required: first, time must be managed as a central resource of the system, while allowing for overbooking with asymmetric protection without increasing cer

关键词： Linux操作系统  

ISBN: (纸本)9787560880563

摘要： 本书依据源代码程序详细描述了Linux内核的基本功能。书中首先介绍了Linux的历史，说明了内核的演变发展过程，然后概要介绍了运行Linux操作系统的PC硬件的组成结构以及内核所使用的汇编语言和C语言扩展部分，着重介绍和说明了80x86处理器在保护模式下运行的编程方法。接着详细介绍了Linux内核源代码的程序文件，每个文件的功能和相关的软硬件知识。在最后一章给出了实验内容，读者可以由此对Linux操作系统内核进行仿真实验，以获取对Linux操作系统工作原理的深入理解。

关键词： home energy management system   demand-side management   time-of-use   fuzzy logic   user comfort  

摘要： Energy consumption in the residential sector is 25% of all the sectors. The advent of smart appliances and intelligent sensors have increased the realization of home energy management systems. Acquiring balance between energy consumption and user comfort is in the spotlight when the performance of the smart home is evaluated. Appliances of heating, ventilation and air conditioning constitute up to 64% of energy consumption in residential buildings. A number of research works have shown that fuzzy logic system integrated with other techniques is used with the main objective of energy consumption minimization. However, user comfort is often sacrificed in these techniques. In this paper, we have proposed a Fuzzy Inference System (FIS) that uses humidity as an additional input parameter in order to maintain the thermostat set-points according to user comfort. Additionally, we have used indoor room temperature variation as a feedback to proposed FIS in order to get the better energy consumption. As the number of rules increase, the task of defining them in FIS becomes time consuming and eventually increases the chance of manual errors. We have also proposed the automatic rule base generation using the combinatorial method. The proposed techniques are evaluated using Mamdani FIS and Sugeno FIS. The proposed method provides a flexible and energy efficient decision-making system that maintains the user thermal comfort with the help of intelligent sensors. The proposed FIS system requires less memory and low processing power along with the use of sensors, making it possible to be used in the IoT operating system e.g., RIOT. Simulation results validate that the proposed technique reduces energy consumption by 28%.

关键词： 液晶彩电   操作系统   主板   智能   换板   通用   图解   上网功能  

摘要： 近年来，智能液晶彩电已成主流。这类液晶彩电的显著特点是搭载有操作系统，并具有上网功能。为满足这类彩电的换板需求，市面上出现了多款适用于智能液晶彩电的通用主板（俗称万能主板），下面以MSD338STV5．0型通用主板为例，介绍其改装连线与软件升级操作，供换板时参考。

关键词： 控制单元   CAN   设计实践   通用   国产化   导弹发射平台   CPU处理器   操作系统  

摘要： 当前,在已装备型号导弹发射平台上,实现系统信息通信的关键硬件设备——通用CAN控制单元中均包含大量进口元器件,部分器件存在一定的禁运风险,特别是软件程序运行的CPU处理器等进口核心器件,在进口非开源操作系统下甚至存在软件后门风险。

关键词： 新工科   嵌入式操作系统   教学改革  

摘要： 为了适应国家对"新工科"人才培养模式的需求,使计算机科学与技术专业学生具备解决复杂工程问题的能力,本文从课程内容建设、教学模式改革、考核方式改革和教师团队建设四个方面提出了嵌入式操作系统的课程改革方案。教学实践结果表明,本文所提出的方案提升了学生的工程能力,达到了"新工科"建设所要求的目标。

关键词： “互联网+”   创新创业教育   操作系统  

摘要： 随着我国互联网技术的飞速进步和创新创业教育的进一步开展,高等院校为了培养出一批适应社会发展需求的创新创业人才,需要对普遍开设的专业基础课继续进行深入地改革。在分析《操作系统》课程教学现状改进措施的基础上,提出了"互联网+"背景下创新创业教育融入《操作系统》课程教学的模式和方法。