怎样使用PowerBuilder实现动态分组统计功能

PowerBuilder数据窗口功能强大．设计时分组统计功能很容易实现，操作步骤为：(1)打开或新建数据窗口，选择菜单“rows”的“create group”项建立分组，(2)选中分组项，再选择菜单“objects”的“sum”项至此完成分组求和功能。但是很多时候需要在运行时实现分组统计功能．即动态分组统计功能。比如运行的数据窗口或动态生成的数据窗口，要对其进行分组统计，只能进行动态分组遗憾的是pb数据窗口本身并不提供动态分组统计的方法，需要另辟蹊径才能实现。     

一分钟无忧超频法

通过本文，你可以了解到： 1，几大主板厂商均提供了自动超频功能。2．如何利用主板厂商提供的超频功能快速．安全地超频。     

brother DCP-9010 CN彩色数码多功能一体机

编辑评价：DCP-9010CN的彩色打印速度快，并具备丰富的功能特性，而且扫描功能也可通过网络进行操作。稍有遗憾的是，DCP-9010CN的纸张处理能力一般。它没有提供自动双面打印功能，也不能添加扩展纸盒。     

中控E6500数据处理站

E6500是新开发的具有分析和统计功能的数据处理站，在实现用户原有的控制功能基础上增加能效分析、质量管理、批次管理、异常报警管理、事件记录等功能。数据处理站可自由设定统计的时间段，使用多种信号触发统计工艺参数的最大值、最小值、平均值及其发生时间、发生报警次数、报警累计时间等参数，实现对整个工艺的分析统计；还可使用内部变量、外部开关量功能触发记录用户自定义的各种参数并生成报表。     

群聊搜索 聊天记录快速曝光

当我们在群聊时，谁发过什么言，说过哪些话，是很难查找的。怎样才能快速找到某人都说过哪些话呢？难道只有自己一个个去查聊天记录统计出来吗？以前只能这样，但现在不是了。在QQ2009SP6里，提供了群聊天记录查找功能。     

用C语言开发FOXBASE^＋的图形功能

用Ｃ语言开发ＦＯＸＢＡＳＥ￣＋的图形功能北京经济学院耿磊一、问题的提出目前，ＦＯＸＢＡＳＥ＋在国内比较流行，但是，由于它自身内部没有提供任何的图形功能，使得开发较高质量的系统受到很大限制。在高级语言中．如：ＴＵＲＢＯＣ、ＰＡＳＣＡＬ等都提供了功能非常...     

Excel数据实时保护（二）

Excel本身没有提供现成的实时保护功能，如果要实现类似的功能，必须要用到Office里面强大的vba来编写相关的代码以实现该功能，相关过程如下：     

软件应用实例——采用PowerBuilder8．0进行数据统计

本文结合运用PowerBuilder8．0数据库开发工具进行数据库应用软件开发的实例，介绍了一种按照多条件对数据进行统计窗口的功能的实现。     

国内外功能食品的发展现状及展望

功能食品，也称健康食品或特定保健食品，是近十几年来国内外发展起来的一类新食品。虽然至今其定义有所不同，但多指低热量、低脂肪、低胆固醇、低盐和食品纤维含量高的，具有生理调节功能，并可预防疾病的食品。功能食品一般具有三方面功能：提供营养、增强感觉和调节生理功能。尽管在功能上与药品相近，但并不是用来治病的药品，而是用以防病强体的食品。l国外功能食品的发展1．1欧美功能食品的发展现状欧美各国，由于生活水平较高，人们体内营养过剩，冠心病、高血压、糖尿病、癌症等病呈现上升趋势，社会医疗费支出巨大。又因医疗水平…     

小白实验室

试验时间：“小盆友”们过节的那天 试验目的：为读者测试最新的Lubuntu 10．04是否值得一用 试验过程：利用光盘启动后，首先选择安装语言（提供65种语言），然后是光盘的功能菜单，提供了预览模式、安装、检测盘片错误、测试内存、从第一硬盘引导五个功能。     

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.