荔枝害虫群落结构及其动态研究

依据软件工程学的原理,采用结构化分析与结构化设计和面向对象设计的方法研制出的植检害虫图文信息及鉴定辅助系统ＰＱ－ＩＮＦＯＲＭＩＳ,是一个融我国对外检疫性害虫的图文信息与种类鉴定专门知识于一体的实用性较强的微机应用系统。其中,检疫害虫图文信息系统ＰＱ－ＩＮＦＯＲＭ包括昆虫计５７种１属,乃用ＷＤＢａｓｅ为主要工具开发;     

多媒体CAI技术在高校足球教学中的应用研究

通过多媒体CAI课件进行足球教学的实验研究,探讨多媒体技术在提高体育技术课教学效果和教学质量中的作用,通过文献资料法、对比实验法、问卷法和数理统计法进行研究,结果显示,学生在学习成绩,学习的积极性、主动性等方面差异显著,实验班的技术成绩明显好于对照班,表明这种教学方法能有效提高体育课的教学效果,发展前景良好。     

分子生物学课堂教学体会

分子生物学课程教学首先着眼于加强教师自身素质,开展启发式和讨论式等教学方法,运用现代化多媒体教学手段。既注重传授学生专业知识,更注重传授学生学习方法,旨在提高分子生物学课堂教学质量,从而满足社会对生物人才的需求。     

Environmental persistence of 2,3,7,8-tetrachlorodibenzo-<Emphasis Type="Italic">p</Emphasis>-dioxin in soil around hardstand 7 at eglin air force base,Florida

Background and Goal  A number of global events have generated intense scientific scrutiny and public concern of polychlorinated dibenzo-p-dioxins (dioxin). DIoxins have been associated with a range of adverse health effects. 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is recognized as among the most dangerous of the dioxin compounds, and was a contaminant found In one of the herbicides used for vegetation control during the Vietnam conflict: Agent Orange. As a result of purging spray systems and leaking drums of Agent Orange concentrate, TCDD contamination occurred in the soils surrounding Hardstand 7 at Eglin Air Force Base, Florida. This research uses a multimedia model to estimate the TCDD concentrations in surface soil around Hardstand 7 for a 70-year time Interval beginning with observed surface soil concentrations 1984. Methods  Hardstand 7 is a nearly 40-m circular concrete and asphalt aircraft parking area. The hardstand was used as a staging area for spraying equipment used to disseminate herbicide In a test area called C-52A within EAFB. Concentrated herbicide was also stored in 208-L barrels for use with the equipment, and later, for disposal. In 1984, a field investigation characterized the extent of TCDD contamination in surface soils around Hardstand 7 using a radial sampling protocol. The 1984 observed concentrations and locations was used in a multimedia model, CalTOX, as an initial source term concentrations and locations to estimate expected concentrations during the subsequent 70-years. Results  The results indicate that more than 94% of the TCDD observed in surface soils 1984 will remain after a 70-year period. Access restrictions and remediation activities at the site eliminate bar verification of the CalTOX estimates. Conclusions. TCDD is highly persistent in the soil medium and natural attenuation may not produce a significant decrease In soil concentrations. Recommendation  Active remediation actions may be required to prevent exposure to TCDD contamination surface soils. Verifying CalTOX concentration estimates an Important step that should be performed, however, the, model provides an easy to use tool to estimate TCDD surface soil contamination at herbicide storage or dispersion staging sites.     

微生物学多媒体教学的实践与思考

在现代科学技术飞速发展的今天 ,多媒体教学已走进学校 ,走进课堂 ,它以其鲜明的教学特点 ,丰富的教学内容 ,形象生动的教学理念 ,促进了课堂教育的信息化和技术化 ,构建了一种新型的教学模式。近年来 ,通过对微生物学多媒体教学的实践证明 ,多媒体教学具有帮助教师拓展教学时空、丰富教学信息、减少教学时间、提高教学效果、延伸教学功能和优化教学手段的作用。     

浅谈动科专业课程多媒体教学中存在的问题与对策

多媒体技术作为一种全新的教学手段走进课堂。本文阐述了动科专业课程多媒体教学的优越性,分析了存在的问题,同时提出一些建议,以期望能充分发挥多媒体技术的优点,更好的提高动科专业课程的教学效果。     

网络农业信息检索多媒体CAI课件开发实例

结合网络信息检索课程的发展和学习的要求,论述了《网络农业信息检索》课件的教学设计、多媒体功能设计、技术实现以度开发的经验和总结,为信息检索课件开发以及网上教学提供方法与借鉴。     

一种多媒体数据库应用系统的实现

介绍一种应用PowerBulder6．5和SYBASESQLAnywhere数据库实现的具有多媒体功能的数据库检索系统。该系统除了具有传统的数据库检索系统所有功能外,还具有动态维护数据和支持多媒体信息播放的功能。它充分利用PowerBuilder6．5所提供的多项先进功能,将文字资料、图片资料和录像资料完美地结合在一起,不仅满足了系统全部功能,并且给人以一种类的享受。     

工程图学教改探讨

从课程内容的选择及调整,课程内容顺序的安排,教学设施及教学资源的配置等方面,探讨了工程图学的教学改革。     

农业植物病理学多媒体教学的实践与思考

文章指出了传统多媒体教学的误区——课件质量不高、教师的主导作用被减弱、学生的主体作用被忽略和学生自主学习的愿望未能很好地实现．基于Web的农业植物病理学多媒体教学课件,从课件内容的设计、课件的课堂演示及教学过程中师生的互动等三个方面有效地提高教学效果．并就未来农业植物病理学的多媒体教学改进进行了探讨。