在VC 中实现Excel数据的导出/导入

使用VC MFC的ODBC类,将Excel文件当作一般的数据库表格,利用ODBC技术像访问数据库一样去读/写Excel文件。该文结合应用实例讨论了在VC 程序中导出/导入Excel数据的方法。     

在Client/Server应用开发中使用ADO

ADO(ActiveX数据对象 )是开发访问OLE数据库应用程序所使用的一种数据库访问组件 ,是一种可以访问各种数据类型的连接机制。它不仅可以通过OLEDB ,ODBC访问数据库 ,还可以使用几乎任何一种数据源 ,如SQLServer,Oracle ,Access,Excel和文本文件、图形文件等。ADO基于OLEDB ,提供统一的数据访问接口 ,使用简单 ,容易掌握。     

数据库访问技术的探讨

在数据库应用系统开发中，采用ODBC的数据库访问形式已成惯例，但这种方式存在的缺点不可忽视，一则是应用系统用户必须通过手动进行ODBC数据源设置。另则要通过烦琐的注册表程序进行更新，极大增加了代码长度，同时又影响系统稳定性。本文从ADO形式数据访问技术的角度，探讨非ODBC标准方式下的数据库访问技术     

VC中动态打开/显示数据库的实现

一、Windows系统应用数据库 在Windows系统中,常用的数据库类型主要是ACCESS数据库;对于ACCESS微软提供了专门的JET数据引擎,MFC也有专门的DAO类(CDaobase和CDaoRecordset等);在这里,附带指出VC6.0还不能访问Access2000数据库(不过可以转换为识别的低版本)。对于其他类型的数据库的访问,不能不想到开放式数据源(ODBC);ODBC是一种编程接口,它能使应用程序以结构化查询语言(SQL)去访问标准的数据库系统一般来说,通过它可以各种类型的数据库。同时通过DAO也可以访问ODBC数据源。本文正是基于这种思路来实现如何动态地打开/显示数据库。     

ODBC技术在中文Excel5.0中的应用

简要介绍了ODBC技术，并给出了在中文Excel5．0中利用ODBC技术对FoxPro数据库文件直接访问的一个实例。     

Developer 2000下ODBC的使用方法及注意事项

ODBC(Open Database Connectivity)是一个用于访问数据库的统一界面标准。ODBC是应用程序的接口,通过该接口,使用结构化查询语言(SQL)可实现对多种数据库的访问。 ODBC提供了极大的互操作性,它使得一个应用可访问不同的数据库管理系统。也使得开发者可以针对某一类数据源进行开发,用户可以选择数据引擎,然后将应用连接     

ODBC配置数据库应用程序

应用ODBC数据源的联接原理，分析了计算机应用程序与数据库进行联接的方法；用C Builder代码，通过ODBC数据源注册了Access数据库；说明ODBC数据源注册数据库的基本方法与步骤；读者可以利用这一原理，编制更加完善的数据库应用程序。     

Visual Basic下基于ODBC API的数据库应用程序设计

Visual Basic(以下简称VB)3.0功能强大,支持Microsoft Access格式数据库,同时也支持ODBC(Open Database Connectivity),特别适用于编写数据库应用系统。ODBC)即开放式数据库互联,通过使用ODBC API,应用程序可以存取在多个个人计算机、DBMS主机中的不同数据存储格式的数据。 一、ODBC结构原理 ODBC之所以能访问不同的数据源是由于通过使用驱动程序来提供数据的独立性。驱动程序与具体的数据有关,ODBC DRIVER提供了不同数据库的Windows驱动程序,这     

VC6使用ODBC API操作Excel表的具体步骤

Excel作为普及率最高的办公软件,受到广泛好评,同时Excel具有记录、统计数据的类似数据库的功能,被广泛用于日常的小规模的数据记录和管理。为了增加对Excel的自动化管理,可以使用c++等语言实现对Excel表的程序访问,提高工作效率。目前,网络共享资源中,对于ODBC API访问Excel表的介绍非常稀少,也不系统。该文希望能对这一领域进行补充和整理。     

利用VC++6.0对数据库的动态刷新和多表切换

ODBC是Microsoft Windows Open Services Architecture(WOSA)的数据库部分,它提供API以使应用程序独立于源数据库管理系统(DBMS)。通过ODBC驱动程序,允许终端用户在一个应用程序中访问不同数据库中的数据。MFC数据库类的目标,就是要为程序员提供用于访问ODBC数据源的高级c 和Microsoft Windows API,基于ODBC保证最大的内部可操作性。通常情况下不需要直接调用ODBC API。     

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.