基于面向对象层次模型的网络多媒体课件开发平台

在开发网络多媒体课件非线性编辑制作平台的过程中,为了优化其功能和结构,采用面向对象的层次结构模型,介绍了该模型的概念、功能特点及在平台中的应用,构建信息资源体结构及其数据结构(带头结点的双向非循环链表),讨论了该平台同步编辑器的设计与实现,包括多媒体的同步合成、参考点的同步模型,并通过研究给出其同步算法。其中,算法的实现,是通过使用队列来存储视频流和进行相关的同步与交互操作。     

基于面向对象层次模型的网络课件开发平台

在开发网络多媒体课件非线性编辑制作平台的过程中,采用面向对象的层次结构模型构建信息资源体结构及其数据结构(带头结点的双向非循环链表)、多轨道视频编辑功能.介绍了该模型的概念、功能特点及在平台中的应用,讨论了该平台同步编辑器的设计与实现,包括多媒体的同步合成、参考点的同步模型,并通过研究给出其同步算法.其中,算法的实现是通过使用队列来存储视频流和进行相关的同步与交互操作.     

一种优化的手机直播系统中音视频同步方法

FFmpeg是一个开源跨平台多媒体数据解决方案,由于手机直播系统在移动通信网络中传输多媒体数据的过程中时常会出现音视频不同步,通过研究基于时间戳的多媒体音视频同步算法模型,将其引入到ffmpeg中,并在android平台进行算法实验,实验证明,基于时间戳多媒体音视频同步算法模型能够有效保证多媒体数据的同步。     

互动多媒体同步机制设计

研究了基于 MPEG-4的面向对象多媒体同步技术。在分析现有多媒体同步技术的基础上，结合 MPEG-4 系统同步机制和高级同步模型(FlexTime)，设计了层结构同步模型，以实现 MPEG-4 中各媒体对象间同步，是一种有效可行的多媒体间同步的实现方法。     

一个多媒体数据同步模型的建立和实现

文章对多媒体数据流间存在的时序问题和时序关系进行介绍，对现有研究情况进行分析.结合一个多媒体数据模型，基于PETRI网，提出了一个同步模型，以表达媒体数据之间存在的同步关系.根据这两个模型对多媒体数据建立了相应的数据结构，并采用该数据结构介绍了对多媒体数据存取播放的实现算法.     

基于Android系统的FFmpeg多媒体同步传输算法研究

FFmpeg是一个开源跨平台多媒体数据解决方案,常被移植到各种嵌入式系统中。将FFmpeg移植到Android系统中,能够增加Android系统对编解码格式标准的支持,但由于目前手机处理能力低,内存小等硬件配置因素,严重影响FFm-peg对音视频流的解码效率,导致解码出的音视频数据无法同步。通过研究基于时间戳的多媒体音视频同步算法模型,将其引入到FFmpeg中,并在Android平台进行算法实验。实验证明,基于时间戳多媒体音视频同步算法模型能够有效地保证多媒体数据的同步。     

协同多媒体著作工具中演示文档的同步模型

多媒体演示文档的协同著作对文档本身的结构与同步模型提出了一定的要求。为了便于面向对象的实现以及灵活多粒度的共享，提出了一个协同多媒体著作工具中分布交互式多媒体文档的同步模型。在此模型中，文档结构分为三层：页面层、对象组层及单媒体对象层，根据各层的特点，其同步分别采用基于跳转、基于事件及基于时间的策略     

协同多媒体菱工具中演示文档的同步模型

多媒体演示文档的协同菱对文档本身的结构与同步模型提出了一定的要求。为了便于面向对象的实现以及灵活多粒度的共享，提出了一个协同多媒体著作工具中分布交互式多媒体文档的同步模型。在此模型中，文档结构分为三层：页面层、对象组层及单媒体对象层，根据各层的特点，其同步分别采用基于跳转、基于事件及基于时间的策略。     

基于MPEG-4的多媒体同步模型设计

文中旨在研究基于MPEG4技术的面向对象多媒体同步。所采用的方法是在分析现有多媒体同步模型的基础上，结合MPEG-4系统同步机制和高级同步模型（FlexTime），设计面向对象的多媒体同步模型，以实现MPEG-4中各媒体对象间同步。由此方法设计的层结构同步模型是一种有效可行的多媒体间同步的实现方法。和其它的多媒体间同步方法相比，这种方法在基于对象的多媒体的传输过程中携带较少的时间信息来完成对象间的同步，并且增强了基于对象内容交互的灵活性。     

分布式多媒体系统中对象表示模型及变换方法研究

在设计一个分布式多媒体系统时，具有挑战性的问题之一是如何在系统的不同层次为各模式设计合适的规格描述模型，并提供不同模型的变换方法的集成与同步策略，在本文中，我们给出了几种多媒体对象的表示模型和变换算法，它们把高层的多媒体对象变换成可以用来支持多媒体对象展示和通信的实用模式，在该模式中能较好地保持多媒体对象的集成与同步特性。     

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。     

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。