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关键词： 生产平台   青岛市   新媒体   索贝   广播电视台   媒体制作   资源共享   操作系统  

摘要： 9月3日,青岛广电全新的融媒体编播平台正式启用,青岛广电在国内率先将电视、广播、新媒体三个制作平台统一在一起,可在一个操作系统内完成不同播出平台稿件的制作,做到“一路采集、融合制作、多屏分发、网络优先、资源共享”.由索贝和青岛广播电视台共同打造的青岛市广播电视台融合媒体制作平台是全渠道深度融合生产平台,致力于将青岛台的内容优势、渠道优势、人才队伍资源进行深度融通,打造互联网环境下的资源汇聚整合、融合生产加工、产品创新、多元发布、精细管理、迭代发展的融合媒体一体化支撑平台.

关键词： 隔离   操作系统   虚拟化   硬件安全扩展  

摘要： 系统隔离是计算机系统整体可靠性、可扩展性的重要支撑技术.传统的系统隔离基于权限构建的层次隔离模型,在设计上将软件分为不同层次,层次由下而上权限不断降低,底层高权限软件层负责对上层低权限软件进行隔离.近年来,随着硬件层不断涌现出硬件辅助虚拟化、ARM TrustZone、Intel SGX(Software Guard Extension)等新技术,离散隔离模型渐渐成为研究热点,为传统的系统软件带来了诸多机遇和挑战.

关键词： COMPUTER equipment  

摘要： The article presents integrated XPedite7674 3U VPX embedded computing board with the LynxSecure Safety Bundle secure software from Extreme Engineering Solutions (X-ES).

关键词： Multi-objective Bat algorithm   Intrusion protection system   Real time operating systems (ROTS)   The quality of service (QoS)   Industrial control systems (ICS)   Optimization  

摘要： The rise of digitization in Industrial Control Systems (ICSs) using Commercial Off-The-Shelf software has stimulated the use of existing IT security solutions. This trend involves serious risks, due to the unsuitability of most existing IT security solutions to ICSs environments. The aim of this study is to prevent Intrusion Detection and Prevention Systems' (IDPSs) behaviors from degrading the QoS of data transfers between time sensitive subsystems of ICSs. Facilities such as Nuclear Power Plants (NPPs) often have systems using Real Time Operating Systems (RTOS), which have to be response-time deterministic. A module is designed based on the utilization law, queuing theory, and a heuristic algorithm in order to evaluate and propose the optimal security policy and configuration for each role representing a machine. The crux of this approach is that the module integrated with the IDPS, solve an optimization problem using the Bat algorithm to generate a Pareto set of optimal solutions and propose the best one that will guarantee the security required for a role, while maintaining QoS (i.e. response time inferior to the Worst Case Execution Time (WCET)). MATLAB is used to simulate the proposed method. The results show that the IDPS efficiently selects the best security policies for all active roles and minimize the chances of WCET violations, thus, avoid any undesirable effects. As shown in the simulation scenarios, the module was able to propose a policy which represents an optimal solution where the security strength value is 0.68942 and the response time is 0.219015 s. Moreover, in the second scenario, even though the first run did not find any optimal solution, the improvement introduced using the urgency flag, solve the problem and propose a security policy for the role under evaluation. Therefore, the approach guarantees the maximum security possible without violating the WCET of roles. The study sheds light on the deficiencies and weaknesses of security systems

关键词： 移动终端  

ISBN: (纸本)9787121348389

摘要： 本书主要针对Android 8.0系统源码并结合应用开发相关知识进行介绍。全书共分为17章，从3个方面来组织内容。第一方面介绍Android应用开发所需要掌握的系统源码知识，第二方面介绍JNI、ClassLoader、Java虚拟机、DVMART虚拟机和Hook等技术，第三方面介绍热修复原理、插件化原理、绘制优化和内存优化等与应用开发相关的知识点。三个方面有所关联并形成一个知识体系，从而使Android开发者能通过阅读本书达到融会贯通的目的。

关键词： Linux操作系统   程序设计   教材  

ISBN: (纸本)7536492035

摘要： 本书以嵌入式Linux作为嵌入式操作系统的实例，按照从硬件到软件，从底层到上层，从系统到应用的认知顺序，内容涵盖嵌入式Linux设备驱动程序开发、嵌入式Linux操作系统核心开发以及嵌入式Linux应用程序开发这三大部分。核心知识点包括嵌入式Linux系统及其开发环境、Linux内核模块与设备驱动程序开发、Linux内核态与用户态程序差别与模式切换、Linux应用程序访问物理设备的方法、Linux多任务管理、Linux内核态线程与用户态线程、Linux多任务优先级管理、Linux调度机制、Linux任务同步机制、Linux任务间通信机制、Linux文件IO、Linux文件与目录操作、Linux终端IO、Linux网络编程等。

关键词： *DRONE aircraft   *EMERGENCY management  

摘要： The article focuses on the use of drones for disaster response during floods and other natural calamities.

标准号: GB/T 36630.3-2018

摘要： GB/T 36630的本部分规定了操作系统产品的相关概念，给出了安全可控评价的指标项及相应的评价方法。本部分适用于评价实施方对操作系统产品的安全可控程度进行评价，也可供信息技术产品供应方和应用方在产品供应和应用过程中保障产品安全可控进行参照。