基于C#.net的院校网上考试系统的设计与实现

采用当前比较流行的C#.net设计并开发院校网上考试系统,开发语言简单、安全,开发效率高,系统部署简单、方便、快捷。     

基于B/S的进销存管理系统设计与实现

Internet的高速发展和信息化时代的到来,为了提高员工效率和管理水平,中小型企业迫切需要一款操作简单、实用的进销存管理系统.针对中小型商贸型企业的客户管理、库存管理、采购管理、信息查询和系统设置,设计和开发了一个基于B/S的ERP进销存管理系统.基于ERP和ASP.NET技术,阐述了进销存管理系统的设计与实现,重点描述了系统各个功能模块的设计、数据库设计、系统功能实现的关键技术.系统具有简单、安全、易扩展、易维护、操作简单的特点.     

面向中小企业的电商平台挖掘系统设计

中小企业电商平台在资金和技术不足的情况下,难以快速有效的构建简单而实用的电商数据挖掘系统.文章从分析电商海量数据资源的来源、提取方法及其流程入手,提出了一个基本的数据挖掘系统方案架构,从而实现为中小企业电商平台服务的一整套数据挖掘系统.该系统架构简单实用、易搭建、易整合,可以为中小企业提供更好的服务支持.     

W2P1微型涡喷发动机地面试车台推力测量系统

介绍了W2P1微型涡喷发动机地面试车台推力测量系统,包括W2P1发动机试车台架,推力测量系统(推力测力系统、推力校正系统)、液压加载校准装置及其校正方法.试车证明,该发动机试车台推力测量系统结构简单,性能稳定,操作简单方便,精度可达0.1%.     

混合动力汽车ISG参数在线监测系统

提出了一种基于虚拟仪器技术的混合动力汽车ISG参数在线监测实时数据采集处理系统设计方案.首先阐述了SRS/G电机的基本工作原理与监测功能需求,然后给出了在线监测系统的软件、硬件实现的思路和方法.由于发挥了虚拟仪器技术的优势,设计的监测系统结构简单、界面友好、操作简单、功能易扩展.系统实现了数据的自动采集、显示、存储、分析及处理,有助于混合动力汽车ISG系统的进一步研究.     

基于VC+ +的OpenGL三维动画仿真系统的实现

介绍了基于VC+ +的编程环境及采用OpenGL图形标准的三维物体运动仿真系统的开发过程.该系统只要简单的通过数据文件的改变就能使不同的三维物体做各种复杂的运动,如变速运动、随机运动等.该系统建立的目的是为各种目标跟踪系统提供一个简单实用的目标仿真环境.     

复杂系统及其仿真研究——为庆祝中国计算机用户协会仿真应用分会成立25周年而作

连续系统仿真、离散事件系统仿真、连续一离散混合系统仿真,其应用科学业已相当成熟.不过,它们仅属于简单系统仿真,而简单系统只是复杂系统的特例.复杂系统是客观存在的,它是具有复杂性的系统.复杂系统的理论是一般性的科学,其内容包括现代系统论、非线性科学和复杂性科学.现代系统论的理论体系包含一般系统论、控制论、信息论、耗散结构论、超循环理论、协同学、突变论;非线性科学的理论体系包含混沌、分形、孤立子、模式形成;复杂性科学的理论体系包含神经网络、Agent、进化计算、L-系统、元胞自动机.复杂系统仿真正在逐步掀起复杂系统的面纱,不断推动复杂系统理论向前发展.至于现代系统论,不难找到专著.这里只是着重阐述复杂性科学和非线性科学的仿真研究.     

一种简单的嵌入式IPSec的研究与实现

随着越来越多的嵌入式系统需要接入Internet以进行全球性的信息通信,这就日益要求解决嵌入式系统的网络通信安全问题.本文阐述了IPSec的体系结构,分析了一种简单的嵌入式IPSec的工作原理、结构、各模块的功能实现和一些简单的安全测试.     

基于NI CompactDAQ的惯性器件性能评估系统

惯性元件性能评估系统,是以单轴速率转台为基础的对陀螺仪或加速度计基本技术指标进行测试、标定和评估的系统.惯性器件作为捷联惯导系统的心脏,其测量系统精度性能的优劣直接影响到惯导系统的精度.选用NI CompactDAQ设备USB-9239作为惯性元件性能评估系统采集核心.NI CompactDAQ提供简单易用USB接口,并在一个简单、用户可配置的系统中集成了传感器的直接连接、信号调理、模数转换等多种特性.实验表明该采集系统运行可靠,提高了测试的精度和效率,为惯性器件的性能分析与进一步改进提供基础,具有巨大的使用价值.     

基于PLC的灌溉自动控制器的开发

本文阐述以PLC作为核心器件,采用模糊控制理论,开发的一种低成本、操作简单、能按作物需水量进行自动灌溉的灌溉自动控制系统,并对灌溉自动控制系统的软件和硬件进行了设计.试验研究结果表明,灌溉自动控制系统精度高、稳定、操作简单,能满足灌溉自动控制的要求.     

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.