埕岛油田卫星平台金属软管漏蚀问题的分析和对策

对埕岛油田卫星平台多年来一直存在的金属软管漏蚀问题进行分析,找出了导致金属软管漏蚀的主要原因,提出了相应的防治措施,主要有:在金属软管外部裹附橡胶垫,采用带弯头的减振金属软管,安装时金属软管的曲率半径要大于其最小弯曲半径等。通过采取一系列措施,解决了金属软管的漏蚀问题,达到了预期的效果。     

Shorts in self-checking circuits

It has been noted by several authors that the classical stuck-at logical fault model might not be an appropriate representation of certain real failures occurring in integrated circuits. Shorts are an important class of such faults. This article gives a detailed analysis of the effects of shorts in self-checking circuits and proposes techniques for dealing with them. More precisely, we show that, unlike other faults such as stuck-at, stuck-on, and stuck-open—which produce only single errors in the place they occur—shorts can produce double errors on the two shorted lines. In particular, feedback shorts can produce double errors on the two shorted lines. The double error is unidirectional for some feedback shorts and non-unidirectional for some others. Furthermore, in some technologies (e.g., CMOS), non-feedback shorts can also produce double non-unidirectional errors. We also show that unlike stuck-at, stuck-on, and stuck-open faults, redundant shorts can destroy the SFS property. Then we propose several techniques for coping with these problems and we illustrate the results by circuit implementation examples.The present study is given for NMOS and CMOS circuits but we show that it is valid for any other technology.     

一种油量在机车信息平台中实时显示的方法

介绍了在运输部信息平台中实现油量实时显示的过程。油量传感器产生的电流模拟信号分成两路，一路传给无纸记录仪，另一路经过电压转变后送至信息平台的状态监测仪，经过状态监测仪的G2002B板处理后通过串口传给工控机，在信息平台上实现油量的实时显示，作用除了提醒司机适时加油以外，更重要的是判断机车作业的油耗情况。     

液压激振系统的检测与控制

本文阐述一种用于控制液压激振装置加载力和加载频率的机液电系统。简要叙述液压激振器的基本原理和特点。分析了双闭环控制回路。重点介绍激振力和激振频率的检测和处理技术。     

Accurate Depth of Field Simulation in Real Time

We present a new post processing method of simulating depth of field based on accurate calculations of circles of confusion. Compared to previous work, our method derives actual scene depth information directly from the existing depth buffer, requires no specialized rendering passes, and allows easy integration into existing rendering applications. Our implementation uses an adaptive, two‐pass filter, producing a high quality depth of field effect that can be executed entirely on the GPU, taking advantage of the parallelism of modern graphics cards and permitting real time performance when applied to large numbers of pixels.     

管杆漏磁探伤现场应用中的问题及对策

阐述了漏磁探伤漏磁场沿管、杆径向的分布特征 ,分析了影响探伤装置漏磁检测准确性的 4个因素 ,验证了信号提离距离的变化对传感器和探伤装置灵敏度的影响。针对在用的大多数浮动式传感器固定机构存在的两个严重缺点 ,提出采用自定位传感器固定机构 ,可消除机械装置对传感器灵敏度的影响。提出了一套标定和校验检测装置的方法 ,以保证探伤仪器的检测灵敏度始终恒定 ,提高检测结果的准确性和可靠性。     

水口电厂1号机转轮漏油及进水原因分析

介绍了水口电厂1号机转轮漏油情况，并对其漏油及进水原因进行了分析，提出了处理方案。     

High-level synthesis design flow for power side-channel security

The lack of efficient security guidance is a prominent problem in the design flow of high-level synthesis. To tackle this issue, this paper proposes a security-based high-level synthesis design flow featuring the power side-channel vulnerabilities. The side-channel leakage is quantified by establishing a secure component module library, a more efficient and secure parallel scheduling mechanism is generated by optimizing the control flow, and a more secure architecture of the storage system is achieved by optimizing the data flow. The goal is to perform tradeoffs between performance and security, reducing the side-channel risks at the early stage of design and simultaneously generating more secure and efficient cryptographic cores in hardware. Furthermore, the proposed HLS design flow is verified on a field programmable gate array platform. Experimental results show that, in comparison with the traditional design flow, this method reduces the resources by 72% and the clock cycles by 70% and increases the throughput by 88%, and that it can lower the power side-channel risks within an ongoing design to the greatest extent.     

基于共同好友数的在线社会网络社区发现算法

为了快速准确地找到在线社会网络的社区结构,提出了一种基于共同好友数和节点邻居信息的社区结构发现算法。该算法以共同好友数最多的两个节点为初始社区,不断寻找与社区连接性最强的节点,并以节点Q值为衡量标准,判断是否将该节点加入到初始社区中,最后根据节点邻居所在初始社区信息确定最终的社区划分。针对两个经典社会网络和人工生成网络数据的实验划分结果表明,该算法是可行和有效的。     

电力变压器蒸发冷却装置FC液位监控系统

介绍电力变压器蒸发冷却装置的液位控制系统,该系统以嵌入式以太网芯片为核心构成网络终端,实现了冷却介质FC液位的远程监测调节。