信号的滤波技术发展历程

详细介绍了滤波技术的历史、发展和应用状况,对几种新型滤波器技术进行了讨论,提供了它们的研究课题。对国内外滤波器现状进行了分析,展望了滤波器技术的未来。     

A new graph cut-based multiple active contour algorithm without initial contours and seed points

This paper presents a new graph cut-based multiple active contour algorithm to detect optimal boundaries and regions in images without initial contours and seed points. The task of multiple active contours is framed as a partitioning problem by assuming that image data are generated from a finite mixture model with unknown number of components. Then, the partitioning problem is solved within a divisive graph cut framework where multi-way minimum cuts for multiple contours are efficiently computed in a top-down way through a swap move of binary labels. A split move is integrated into the swap move within that framework to estimate the model parameters associated with regions without the use of initial contours and seed points. The number of regions is also estimated as a part of the algorithm. Experimental results of boundary and region detection of natural images are presented and analyzed with precision and recall measures to demonstrate the effectiveness of the proposed algorithm.     

Real-time reliability prediction for dynamic systems with both deteriorating and unreliable components

As an important technology for predictive maintenance, failure prognosis has attracted more and more attentions in recent years. Real-time reliability prediction is one effective solution to failure prognosis. Considering a dynamic system that is composed of normal, deteriorating and unreliable components, this paper proposes an integrated approach to perform real-time reliability prediction for such a class of systems. For a deteriorating component, the degradation is modeled by a time-varying fault process which is a linear or approximately linear function of time. The behavior of an unreliable component is described by a random variable which has two possible values corresponding to the operating and malfunction conditions of this component. The whole proposed approach contains three algorithms. A modified interacting multiple model particle filter is adopted to estimate the dynamic system’s state variables and the unmeasurable time-varying fault. An exponential smoothing algorithm named the Holt’s method is used to predict the fault process. In the end, the system’s reliability is predicted in real time by use of the Monte Carlo strategy. The proposed approach can effectively predict the impending failure of a dynamic system, which is verified by computer simulations based on a three-vessel water tank system.     

高等院校计算机音乐实验室日常管理中存在的问题及策略思考

高等院校的计算机音乐实验室是艺术类院校计算机音乐课程教学、科研的重要场所。本文分析了实验教学场地设备不足、实验室外设多而杂、实验室管理人员安装、备份系统和计算机病毒传染等常见问题,在工作实际的基础上,结合几年来管理维护的实践经验,介绍了在实验室管理维护中解决这些问题的方法、对实验室管理维护模式提出了建议。     

论网站页面设计的一致性原则

随着网络技术与电子商务的发展,网站页面设计也越来越受重视,优秀的网页虽然各有特色,但都遵守最基本的原则即保证页面的一致性。通过从页面结构、色彩、导航栏以及页面标准元素功能四个角度分析应如何设计网站页面,既保证页面之间的一致性,又使得读者不会因页面风格过于一致而产生视觉疲劳,并在此基础上提出了一个基本的保证页面一致性的设计方法。     

网络教学心得

该文主要讲了网络教学中必须掌握的知识要点。     

代理服务器的组建、维护与管理技术

代理服务器是实现多个用户使用一条外网线同时访问互联网络不可缺少的组成部分,文章结合计算机网络专业课程的教学与实践,分别介绍了代理服务器的作用、配置、组建和维护与管理技术与技巧,是网络技术人才培训的一个实训项目。     

计算机房常用教学软件的安装和维护

高校的计算机房所用的操作系统大多数是Windows,常用教学软件的安装和维护,需要有非常丰富的计算机知识和动手能力很强的计算机老师来担当,学校的教学机房的维护管理好坏,直接影响到计算机的正常教学工作,该作者从事过一段机房软件安装、维护、管理工作,在此把他的管理经验和技巧归纳了一下。     

计算机显示器常见故障分析与维修

首先介绍了计算机硬件维修的基本方法和维修的技巧,然后对常见的计算机硬件故障进行了分析,最后提出了显示器的维修实例。     

电子阅览室的维护与管理

根据我校图书馆电子阅览室运行的实际情况及经验,阐述了电子阅览室的维护和管理方法。