多媒体CAI课件"平抛运动"的开发与应用

笔者以Authorware作为开发平台制作的助教型“平抛运动”CAI课件，系统、全面地讲解了高中物理中有关抛物体运动的知识内容，其中利用Authorware提供的编程功能制作的物体平抛运动模拟演示实验，形象、直观地展现了平抛运动在水平与竖直方向的分解规律。另外，课件提供了交互式的课后练习，以兼顾学生个别化学习。本文介绍了该课件的设计、开发与应用中的关键问题。     

AFTER EFFECTS

创建物体动画最快速的方法是使用运动捕捉，这是一种以真实世界物体为动画而提供的运动。现在打开光盘After Effects Shortcut文件夹中的文件,依照我们循序渐进的技巧教程来学习如何使用这种方法。     

一个新颖生动的XOR动画实例

当我们观察或设计计算机动画显示时都有这样的体验,就是在很多情形下,产生动面效果只需改变屏幕中一个前景运动物体在画面中的位置,而其背景和动画物体的形状一般是保持不变的。例如,当动画模拟一个在背景中快速移动的飞机或汽车时,因该物体是在屏幕中作平动,每次运动的结果只是显示位置的变化,而其图形本身形态并无变化,这时是     

关键帧动画物体变形动画和过程动画

一、关键帧动画关键帧的概念来源于传统的卡通片制作。在早期WaltDisney的制作室，熟练的动画师设计卡通片中的关键画面，也即所谓的关键帧，然后由一般的动画师设计中间帧。在三维计算机动画中，中间顿的生成由计算机来完成，插值代替了设计中间帧的动画师。所有影响画面图像的参数都可成为关键帧的参数，如位置、旋转角、纹理的参数等。关键顿技术是计算机动画中最基本并且运用最广泛的方法。另外一种动画设置方法是样条驱动动画。在这种方法中，用户指定物体运动的轨迹样条，轨迹样条由用户交互给出。几乎所有的动画软件如Alias、bofti…     

Authorware中制作动画的几种方法

课件中的平面动画通常是用专门平面动画设计软件制作的，其实作为一款优秀的多媒体课件的制作工具，Authorware本身亦具有强大的平面动画设计能力，文章详细介绍了在Authorware中利用移动图标、显示图标、决策图标及交互图标制作动画的方法及技巧。     

如何在Authorware中插入和控制Flash动画

Authorware是我们常用的多媒体创作软件，而Flash是出色的动画制作软件，两者在多媒体作品创作中都有很广泛的应用。在用Authorware制作课件时，常常需要使用Flash动画来增强课件的教学效果。那么，怎样在Authorware中插入和控制Flash动画呢？例如，Flash动画的播放、暂停、快进、快退等操作。下面给大家介绍两种容易掌握的实现方法。     

“飞机+炸弹”就是平抛

平抛运动是中学物理的必考点,我们用PowerPoint来进行现场演示。在物理的“平抛运动”教学中,需要演示从水平飞行的飞机中投出炸弹的轨迹以及两球相撞的平抛运动关系。这次来看看PowerPoint的精彩表演吧。本节课程《平抛物体的运动》一、教学目标让学生掌握平抛运动的分解方法及运动规律。二、重点、难点分析1.重点是平抛运动的规律:物体(质点)的位置、速度如何随时间变化,轨迹是如何形成的;2.平抛运动是怎样分解为水平方向的匀速直线运动和竖直方向的自由落体运动的?这是难点,也是教学的重点。三、课件运用目的:形象直观地演示平抛运动,…     

Authorware中实现运动轨迹着色动画

将运动图标和交互图标结合起来,利用Authorware的系统变量和函数实现运动轨迹着色,产生轨迹着色动画。     

Authorware中的动画制作和控制

本文介绍了在Authorware中制作变速动画、旋转动画、及用其过渡效果制作动画和制作精美动画的方法,给出了运用动画控制从而使其产生特殊动画效果的做法。     

3DS MAX软件摄像机技术的应用研究

在5自由度机器人动态装配场景动画制作过程中，合理运用3DS MAX软件摄像机技术，既可使装配细节更具层次性，也可使装配场景更具生动性，还可使装配过程更具流畅性，其技术关键在于合理掌握摄像机、摄影标以及物体运动关键帧等的参数设置。本文通过实例说明了这些参数的设置方法与技巧，使5自由度机器人装配场景动画按设计意图作规定路径、规定时序的运动，达到预期效果。     

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。