二叉树遍历的非递归算法分析与实现

对二叉树的遍历过程进行了深入的分析,根据二叉树三种遍历的内在关系给出了求先序序列、中序序列和后序序列的非递归算法,该算法只需对二叉树遍历一次即可求出三种遍历序列。     

二叉树遍历的通用递归算法研究与实现

对二叉树先序遍历、中序遍历和后序遍历递归算法进行了分析,给出了三种遍历方法的通用递归算法。该算法只需对二叉树遍历一次,对每个结点的值域（Data）访问三次即可求出三种遍历序列。     

二叉树遍历的通用递归算法研究与实现

对二叉树先序遍历、中序遍历和后序遍历递归算法进行了分析,给出了三种遍历方法的通用递归算法。该算法只需对二叉树遍历一次,对每个结点的值域(Data)访问三次即可求出三种遍历序列。     

二叉树遍历的通用非递归算法

对二叉树的遍历过程进行了深入的分析,给出了求先序序列、中序序列和后序序列的通用非递归算法。该算法只需对二叉树遍历一次即可求出三种遍历序列。算法本身揭示了二又树三种遍历的内在关系。     

遍历二叉树的递归与非递归算法浅析

二叉树是数据结构中最常见的一种存储形式,而遍历二叉树又是二叉树中最重要的操作.该文分别以递归和非递归两种不同的算法来分析遍历二叉树的过程,旨在用简单明了的方法来实现二叉树的遍历,且先序、中序、后序三种遍历方式都可通过这两种算法实现.     

遍历二叉树的递归与非递归算法浅析

二叉树是数据结构中最常见的一种存储形式,而遍历二叉树又是二叉树中最重要的操作。该文分别以递归和非递归两种不同的算法来分析遍历二叉树的过程,旨在用简单明了的方法来实现二叉树的遍历,且先序、中序、后序三种遍历方式都可通过这两种算法实现。     

构造二叉树算法的研究

本文介绍了由一棵二叉树的某两种遍历序列或某种遍历序列和结点的某种信息可以唯一确定该二叉树的各种可能方法。同时本文将给出基于先序序列和结点右孩子情况的构造二叉树的非递归的新算法。     

二叉树的先序遍历和中序遍历的非递归算法

从二叉树先序遍历递归算法的执行过程的分析入手,总结出二叉树先序遍历的实质,从而得出利用栈的二叉树的非递归算法。最后,再从分析二叉树中序遍历与先序遍历过程实质的不同之处,得出了二叉树中序遍历的非递归算法。重点在于对二叉树先序和中序遍历过程实质的分析。     

二叉树的遍历探究与应用

通过对同一棵二叉树的前序遍历、中序遍历、后序遍历及层次遍历得到四个不同序列的分析,概括出二叉树的前序遍历、中序遍历、后序遍历及层次遍历序列间的关系,确定对应的二叉树。     

完全二叉树非递归无堆栈先序遍历算法的研究

通过对满二叉树的层次结构、顺序序列与先序序列三者之间解析关系的研究,得到了满二叉树的层次结构及顺序序列与先序序列之间互相转换的算法,并由此演绎出了非递归无堆栈方式的完全二叉树先序遍历以及先序与顺序互转算法。该算法可在常数时间内完成单个结点的查询,在线性时间内完成整个序列的遍历或互转。以精准二进制编码的解析公式为基础,易于与位运算结合,不仅适合常规程序设计,而且适合于嵌入式及相关的专业开发。通过一个简单的示例,说明了该算法在虚拟植物建模方面的应用。     

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。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。