P9816驱动的护栏管显示与控制系统设计

设计了护栏管显示与控制系统,给出了它们的硬件电路图。结合驱动芯片P9816的通信协议,编写了相应程序来控制护栏管的显示。系统采用控制器读取SD卡中的数据并进行处理,将处理后的数据送入护栏管,护栏管即可显示丰富多彩的内容。     

网络信息安全问题的法律探析

网络技术的发展以及应用深刻地影响着人类社会,在给人类带来巨大便利的同时也带来了诸如网络信息安全问题等隐患,这不仅在技术层面给我们提出新的问题,在法律层面也提出了更高的要求。本文介绍了对网络信息安全问题进行法理探讨的背景,并且在分析了国内外研究现状的基础上提出在法律层面解决网络信息安全问题的初步构想。     

μC/OS-Ⅱ实时操作系统中时间管理的改进

通过介绍μC/OS-Ⅱ实时操作系统中的时间管理功能,分析了系统中任务延时的优缺点.研究了一种基于硬件的延时机制,以提高系统的运行速度与实时性.在C8051F120单片机上进行测试,经实验得出此方法可以提高系统的实时性,减少系统的额外开销.     

疾病编码检索软件的设计与应用

通过自行设计疾病编码检索软件,弥补现有系统中的不足,提高医院信息工作效率。     

Fire detection algorithms for video images of large space structures

In large space structures, the latest fire detection methods are based on video image processing and data fusion. But the false positive rate and false negative rate remain unsatisfactory and need improving. The emphases of this paper are target extraction and recognition. A new adaptively updating target extraction algorithm (NAUTEA) is proposed by which the intact target can be extracted in time. In addition, some fire video image recognition algorithms, such as fuzzy neural network (FNN) and FGALSSVM (Fuzzy GALSSVM), are studied and improved. To verify the performance of these algorithms, a prototype system is developed, and a series of algorithm tests on a fire video are conducted. These tests make it clear that, the accurate, robust and real-time fire detection can be realized.     

Coordinated controller tuning of a boiler turbine unit with new binary particle swarm optimization algorithm

Coordinated controller tuning of the boiler turbine unit is a challenging task due to the nonlinear and coupling characteristics of the system. In this paper, a new variant of binary particle swarm optimization (PSO) algorithm, called probability based binary PSO (PBPSO), is presented to tune the parameters of a coordinated controller. The simulation results show that PBPSO can effectively optimize the control parameters and achieves better control performance than those based on standard discrete binary PSO, modified binary PSO, and standard continuous PSO.     

Semi‐global output feedback tracking control for fully actuated ships

An output feedback trajectory tracking controller for a kind of 3 degrees of freedom (DOF) ship motion nonlinear model is designed. The closed‐loop control system is proven to be uniformly semi‐globally exponential stable with a separate stability result for the observer by applying nonlinear cascaded system theory. Simulation results on a model ship, Cybership II, are presented to validate the proposed control scheme. Copyright © 2011 John Wiley and Sons Asia Pte Ltd and Chinese Automatic Control Society     

Performance assessment in an interactive call center workforce simulation

In this paper, a new performance assessment methodology for human-in-the-loop call center systems at the level of customer-agent interactions (CAI) is proposed. We develop a team-in-the-loop simulation test bed, to analyze CAI-level performance of a service system using a temporal performance measure with time windows. The proposed framework should allow researchers to collect and analyze individual as well as team performance at a finer granularity than current call center efforts which focus on queue-centered analysis. The software framework is object-oriented and has been designed to be configurable. A sample simulation study in different scenarios is illustrated to provide the usages and advantages of the proposed method with index of Interactive Service Performance.     

一种支持大规模多种精度地形的实时绘制算法

为加强大规模地形数据的表现能力,通常采用地形叠加或地形编辑等方法在局部地形数据上构建更高精度的细节模型.因而如何将大规模地形数据与具有高精度的细节数据进行实时融合与绘制成为一个迫切需要解决的问题.基于Geometry Clipmap方法对这一问题开展研究,给出了一种支持大规模多种精度地形的实时绘制算法.在预处理阶段,对大规模地形数据采用clipmap结构进行组织,对细节数据使用mipmap结构进行组织;在运行阶段,重点针对clipmap更新所引起的不同种精度数据间特有的"F"形空洞进行分析和处理,使用过渡带结构对空洞区域进行修补,并对修补后的顶点进行了平滑处理.实验结果表明,该方法有效解决了"F"形空洞并支持大规模地形及细节数据的实时绘制.