运用多媒体课件讲授大学数学课程的几点体会

针对大学数学课程的特点,结合教学实践,从教案书写、课堂教学设计、课件的制作三个方面探讨运用多媒体课件的教学体会。     

普及教师的多媒体应用技术

科学技术是生产力,现代教育的多媒体技术也是教育力,目前情况下,这种教育力能量的大小取决于任课老师掌握多媒体应用技术,直接影响着教学改革的进程。因此,有必要花气力使任课老师尽快掌握多媒体应用技术,促进教育技术尽快转化为教学效益。     

多媒体网络实时监控平台的设计与实现

本文通过对多媒体网络通信、网络监控的特点及现存问题的分析 ,提出了多媒体网络实时监控平台的开发模型 ,并阐述了实现该平台的关键技术     

Automatic cataloguing of advertisement in magazines

Advertising activities are one of the main aspects of companies. Its global evaluation is an important index, not only within economic sectors, but also for public economic policies. The evaluation of the adverts is carried out by specialised companies, which deliver advertisement expenditure information. Their work consist in an exhaustive collection of adverts (e.g., all adverts from any media), and deliver information (integrated from every media) relevant for their clients. The delivered information can range from statistical data to bear witness of an advertisement campaign. Important quality indicators for the delivered information are the exhaustiveness, the delay of delivering and a correct identification of different versions of an advert. In this article, we present an advanced computer-aided system for collecting and delivering advertising information from magazines and daily press. The system provides computer-aided data validation and exploitation resources. Using computerised document image analysis and image database indexing and retrieval, the system is able to locate an advert in a page, extract relevant quality indicators and search the advert (or similar ones) in a database. This tool is configured as an intranet and offers resources for image data acquisition, storage/retrieval and advert quality indicators extraction, however, the key of the system is the underlying idea of incorporating computer-aided visual information management.The EU has funded the system construction within the program: European Take-up of essential Information Society Technologies, Integrated Machine Vision (EUTIST-IMV), task CV-AdControl. .     

基于COM组件技术多平台开发多媒体CAI系统的研究

介绍了基于COM的ActiveX技术,采用VB6．0,VC ,AutoCAD2000,Director8．0等多个平台共同开发多媒体CAI系统的设计方案,使多媒体系统功能更强大、速度更快捷,并有良好的可扩充性和可移植性,最后以《计算机图形学》CAI为例,介绍了实际的操作方法和关键技术。     

Interactive pattern analysis for relevance feedback in multimedia information retrieval

Relevance feedback is a mechanism to interactively learn a users query concept online. It has been extensively used to improve the performance of multimedia information retrieval. In this paper, we present a novel interactive pattern analysis method that reduces relevance feedback to a two-class classification problem and classifies multimedia objects as relevant or irrelevant. To perform interactive pattern analysis, we propose two online pattern classification methods, called interactive random forests (IRF) and adaptive random forests (ARF), that adapt a composite classifier known as random forests for relevance feedback. IRF improves the efficiency of regular random forests (RRF) with a novel two-level resampling technique called biased random sample reduction, while ARF boosts the performance of RRF with two adaptive learning techniques called dynamic feature extraction and adaptive sample selection. During interactive multimedia retrieval, both ARF and IRF run two to three times faster than RRF while achieving comparable precision and recall against the latter. Extensive experiments on a COREL image set (with 31,438 images) demonstrate that our methods (i.e., IRF and RRF) achieve at least a improvement on average precision and recall over the state-of-the-art approaches.     

网页设计制作中的一些体会

面对学生自主学习对高质量网站和网络课件的需求,文章对网页设计制中从内容选择、版面布局、多媒体及其他技术的应用等方面进行了介绍。     

Students’ perceptions of teaching technologies, application of technologies, and academic performance

This study examined business students’ perceptions of four objectives (i.e., Enjoyment, Learning, Motivation, and Career Application) across five teaching technologies (i.e., Projector, PowerPoint, Video, the Internet, and Lecture), business professors’ effective application of technologies, and students’ academic performance. We collected data from 215 students at a regional state university in the USA. We developed Students’ Perceptions of Technology Scale, SPOTS, specifically for the present study, used the most rigorous criteria, and investigated reliability, convergent and discriminant validity, exploratory and confirmatory factor analysis, and measurement invariance of this scale. Mean scores revealed that Video conveyed the highest amount of Enjoyment. PowerPoint provided the highest amount of Learning and Motivation. The Internet provided the highest Career Application for future jobs. Younger students preferred Video, whereas older students favored Lecture. Regression results showed that the use of Video for Learning, Projector and Lecture for Enjoyment, PowerPoint for career and Motivation, and the Internet for Learning contributed to professors’ teaching effectiveness. Students’ high ratings for professors’ effective use of the Lecture method and low expectation for the use of a Projector predicted their self-reported GPA (academic performance). Professors may use a different mix of technologies in the classroom and use them creatively in order to promote the most Learning for students and satisfy students’ Learning needs and objectives.     

C程序设计多媒体教学探讨

针对目前C语言教学中广泛存在的学时少与信息量大的矛盾。分析了传统教学手段与多媒体教学手段的利与弊,提出了以传统教学手段为主。多媒体教学手段为辅的授课方法,以提高教学质量。     

仿真实验软件的基础探析及对策

随着计算机图形学和图像处理的飞速发展,仿真技术和多媒体技术日渐成熟,用于模拟训练的计算机仿真实验软件争相出现。计算机仿真实验软件提供各种实验平台和器具,模拟普通或者特定的实验环境。为基础实验及自由实验探索提供了平台,给实验类教学带来了新的方式。本文通过与传统实验教学模式的比较,讲解了计算机仿真实验软件在实验教学中的积极作用和一些消极影响,提出了使计算机仿真实验软件有效应用和顺利发展的方法。