基于PowerBuilder 9.0树形视图列表项的动态构建技术探讨

通过查询语句“SelectDistinct...”和游标从动态变化的数据表中获取指定列的数据(不重复的值)作为树形视图控件的列表项,并结合函数InsertItemLast()很好地解决了树形视图控件的列表项在PowerBuilder9.0应用程序中的动态构建问题。     

Visual C++中树形视图控件的使用

一、引言 树形视图控件是Windows95/98中最流行最通用的控件,同时它又是最复杂的控件之一。它属于Windows公用控件,在MFC类库中提供有相应的公用控件类用于封装Windows公用控件。公用控件类只能在Windows 95、Windows NT 3.51及以后版本中使用。 树形视图控件是一个窗口,在其中分层地显示一个条目中的列表,例如文档的标题、索引中的项,或者磁盘上的文件和目录,每个条目包含一个标签和一个可选择的位图,并且有一个所有子条目的列表同它相关。单击该条目,用户可以展开和隐藏有关的子项目列表。     

树形控件和列表控件在"新闻稿处理编程"中的应用

树形控件和列表控件都是基于对话框使用的控件.列表控件显示一个项目列表供用户浏览和选择,而树形控件用来以树形格式显示有层次的信息.本文以基于对话框的新闻稿处理程序为例,编写了自己的列表控件类和树形控件类,并说明了它们在对话框编程中的应用.     

基于VS下MFC的List Control控件操作的实现

实现了List Control列表视图控件内列表项为可编辑框、组合下拉框等功能.     

具有排序功能的列表视图控件

简要说明了事件驱动程序与回调函数的原理 ,详细讲述了使用 VC+ +为列表视图控件增加排序功能的设计方法与技术 ,为解决列表项有序而查看该信息方便的问题 ,辅以实例加以说明。     

列表视图控件的拖放研究

控件是构造 Power Builder(PB)应用程序界面的基本部件 ,利用控件和程序代码可以实现界面的强大功能。研究了 PB中用列表视图控件的拖放来实现数据窗口中数据的联动显示。     

TreeView控件在ASP.NET中的动态生成

TreeView控件是Web应用程序开发中经常用到且功能强大的控件,用来显示信息的分级视图,如同Windows里的资源管理器的目录。本文主要阐述如何根据SQL Server2008数据库中的数据,在Visual Studio2010环境中用ASP.NET TreeView控件动态生成一个无级限的树形菜单。     

易用为本——利用PB的树形及列表控件编程

树形和列表控件是Windows操作系统中经常使用的信息表达方式.它们表达信息直观,层次清楚,特别适用于比较复杂的结构.从典型的管理系统入手,利用PowerBuilder(后文简称PB)探讨这两类控件的编程方法.     

动态绑定TreeView控件实现网站分类导航

在Web应用程序开发中经常使用TreeView控件来分级或分层视图的形式来显示信息．类似于Windows中在资源管理器里以树形结构方式显示文件和目录等信息。以多层次网站分类导航为例,在ASP．NET环境下,采用递归算法实现TreeView控件与SQLServer数据库中数据的动态绑定．对于TreeView控件在实际项目开发中的应用具有一定的参考价值。     

Word,也能播放Flash

文字处理是Word的强项,Flash播放好像与它风 马牛不相及。可是你知道吗,Word中也能播放Flash, 一起来开开眼界吧! 打开Word,选择“视图”菜单下面的“工具栏”中 的“控件工具箱”命令项,这时会弹出“控件工具箱”对 话框,再单击该对话框右下角的“其他控件”按钮,在 弹出的列表中选择“Shockwave Flash Object(SWF 控件)”,这时在当前光标处会插入一个Flash播放窗口 (如图1)。 再单击“控件工具箱”对话框中的“属性”按钮,在 “属性”对话框中找到“Movie(影片)”项,在后面输 入框中输入你需要播放的Flash文件的地址,再找到 “EmbedMovie(嵌入影片)”项,将其模式设置为“True (真)”(如图2)。     

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.