Visual Basic模拟考试系统开发

根据全国计算机等级考试二级Visual Basic考试特点，利用Visual Basic．NET开发二级Visual Basic模拟考试系统，提出包括数据库操作、数据库中OLE对象数据存取、自动启动Visual Basic应用程序、上机、笔试模拟、复习、数据加密解密等主要模块的解决方法，满足二级Visual Basic学习、训练、模拟考试的自学要求。     

基于VB.Net的数据库访问技术

本文介绍了在Visual Basic.NET使ADO.NET访问数据库的方法,着重介绍ADO.NET的离线访问数据库的功能,以期能为实际开发带来具体参考价值。     

基于.Net的数据库访问技术

本文介绍了在Visual Basic.NET中使用ADO.NET访问数据库的方法,着重介绍了ADO.NET的离线访问数据库的功能,以期能为实际开发带来具体参考价值。     

VisualBasic.NET前瞻

一、前言 Visual Basic以简单易学、开发效率高而拥有大批忠实的用户。但是,由于不是完全的面向对象以及在多线程方面性能不佳,导致了Visual Basic对于Windows底层的开发力不从心。Visual Basic.NET是微软在Visual Basic 6以后推出的新一代的开发工具,是微软.NET战略的主要组成部分之一。Visual Basic 5到Visual Basic 6的变迁只是一些新功能、新控件的增加,但是总体的框架并没有改变,并且Visual Basic 5的工程源代码大多数可以轻松升级编译。但Visual Basic. NET的巨大变化却很难保证遗产代码的     

ADO在Visual Basic.net中的应用

一、引言 Visual Basic.NET是微软对Visual Basic语言进行的升级版本。它是一种完全面向对象的编程语言。微软对系统进行了很大的改进。其中对ADO的改进特别大。在Visual Basic中的ADO在Visual Basic.NET中不再支持。Visual Basic.NET中以ADO.NET取代以前的ADO。ADO.NET固然有较好的性能,但它编程起来却很复杂,比较麻烦,不是一般的新手所能达到     

Visual Basic.NET与数据库服务器连接方法改进

开发数据库应用系统,前台通常是用面向对象的开发语言,后台则需要用数据库软件来支持,如何简单、有效、智能的实现前台开发语言与后台数据库的连接,文章通过调用系统函数的方法实现了Visual Basic.NET与数据库服务器的自动连接,解决程序编码迁移后无法直接识别数据库服务器的问题。     

VB6对.NET类库的调用

研究使用Visual Basic 6调用.NET类库的两种方法,探讨了直接在VB6中引用.NET类库的方法以及局限性和采用Visual Basic Fusion使用.NET类库的方法以及优点.     

Visual C++ .NET应用与开发系列讲座--Visual C++ .NET概述

自2000年6月微软宣布自己的.NET战略以来,.NET已经从战略组建变成现实..NET不仅带来了全新的、快速而敏捷的企业计算能力,而且还为软件开发商和软件开发人员提供了支持未来计算的高效Web Service开发工具.2002年2月微软正式推出了一个全新的开发平台Visual Studio.NET,它是.NET开发工具之一.在这个平台上,包括了Visual C++、Visual Basic和Visual C#等开发工具.     

基于VB.NET的数据采集系统软件设计

介绍了一种基于GPRS和Internet网络的环境数据采集系统中心监控软件的设计。中心监控软件负责从Internet上接收数据采集端发送的数据并进行存储和处理。软件采用模块化设计，在微软．NET架构下采用VB．NET（Visual Basic．NET）语言进行开发，配合先进ADO．NET数据库访问技术和多线程Socket（套接字）网络编程技术分别实现了数据的存储管理和数据通信。     

设计数据库应用各阶段的工具——用VB开发数据库应用之一

如今Visual Basic已经成为全球流行的RAD(Rapid Application Development.快速应用开发)开发工具之一。VisualBasic 6.0同先前的Visual Basic 3.0相比,已经有了巨大的改变。从系统本身的角度来讲,一个重大的进步就是可以开发ActiveX组件。同Visual Basic 5.0相比,则更紧密地集成了数据库开发工具,这种集成覆盖了数据库应用开发的各个阶段。在开发数据库的过程中,可以分为定义解决方案。实现数据库结构和生成代码三个阶段。Visual Basic 6.0对于这几个阶段分别提供了有效的工具,可以大大加快数据库的开发进度,提高开发质量。     

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.