利用Packet Tracer软件实现交换机工作原理的模拟

该文简要地介绍了交换机的工作原理以及思科网院提供的Packet Tracer软件,较为详细地介绍了如何利用Packet Tracer实现交换机工作原理的模拟方法和步骤,丰富了实验教学手段。     

利用Packet Tracer模拟软件实现交换机VLAN的配置

本文简要地介绍了虚拟局域网(VLAN)的概念和技术以及思科网院提供的Packet Tracer模拟软件,较为详细地介绍了如何利用Packet Tracer实现交换机VLAN和VTP配置的方法与步骤,丰富了实验教学手段。     

利用模拟软件改进中职网络构建课程教学的探索

本文针对中职网络构建课程教学现状,探索利用模拟软件进行网络构建课程教学改进,采用Packet Tracer这款界面直观、操作简便的软件模拟网络构建实验环境,克服传统教学依赖实训环境和硬件设备的局限性,提升教学成效。     

利用Cisco Packet Tracer模拟组建真实校园网

本文主要通过模拟软件Cisco Packet Tracer 5.1来模拟组建一个真实的校园网络,通过校园网的模拟组建,我们不仅对Cisco Packet Tracer软件有了更深的认识,掌握更多的应用技巧,也对如何使用高端设备组建校园网或局域网有更加深刻的体会,学会应用高端设备。     

IP Sec VPN项目教学设计与实现

本文旨在探讨在Cisco Packet Tracer软件平台上运用IP Sec VPN技术,以江西现代职业技术学院分为东、西校区的网络布局情况作为模拟工程项目,实现学院东、西校区局域网内主机可以互相访问。本文重点讨论了基于Cisco Packet Tracer的IP Sec VPN项目教学设计与实现过程。     

基于PPP和EIGRP的B类地址可变长子网设计

本文介绍了PPP协议和EIGRP路由协议的原理以及配置方法,给出了PPP和EIGRP协议的网络配置过程,并实现了B类地址的可变长子网掩码网络设计,采用思科模拟软件Packet Tracer 4.1对整个规划好的网络进行模拟和数据测试,最后进行了相应的结果分析.     

思科Packet Tracer仿真软件在网络技能考核中的应用

思科Packet Tracer仿真软件以其对网络实验环境的高仿真度,在各类院校网络技术课程教学中被用来作为网络实训平台辅助教学,解决了院校缺少真实网络实验设备的实际困难,提高了网络教学的效果。而该仿真软件中的自动组卷和实时网络技能测试评价统计功能在网络技术课程的考评体系中也能够极大地克服传统网络考评方式中的种种缺陷和弊端,具有一定的推广应用价值。     

基于Packet Tracer的Multiuser扩展构建分布式网络模拟实验环境

Packet Tracer广泛应用于计算机网络课程的教学实践中.不同于传统的单机模拟,利用Packet Tracer的Multiuser扩展构建分布式的网络模拟实验环境,可解决单机模拟在规模、性能等方面的限制.该实验环境可用于加强教学互动,帮助学生掌握概念和操作方法,提高教学效果.     

基于Packet Tracer的无线网络组建实验研究

无线计算机网络的组建是高职计算机网络技术专业重点教学内容之一,本文结合当前高职无线计算机网络实验教学的现状,提出一种采用Packet Tracer网络模拟软件来完成无线网络组建实验的有效方法,并在Packet Tracer虚拟平台下设计了网络拓扑结构,构建了虚拟的无线网络环境,对相关设备进行了配置,最终对实验结果进行了验证。     

基于Packet Tracer的网络互连技术仿真实验综述

分析了由于计算机网络新技术的发展,大学网络实训设备的缺乏和迟滞导致真实的实训环境难以搭建的现状。针对当前网络互连技术实验教学的要求和特点,将一款易用的仿真软件Packet Tracer应用到网络互连技术课程实验中,能有效解决理论与实践、教学与实验的问题,增强学生实践能力。着重介绍了利用Packet Tracer搭建一个公司网络,其搭建和配置方法可以推广到该平台下其它网络互连技术的实验中。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.