论在英语教学中如何使用多媒体辅助教学

本文简要的概述了英语教师在使用多媒体时所注意的四个方面。从而保证了英语课堂的和谐高效的教学氛围,也是教学效果得到了明显的提高和保证了更佳的教学效果。     

蔬菜病虫害多媒体信息咨询系统

收集了福建省25种主要蔬菜的99种病害、50种虫害的相关资料 ,采用多媒体技术 ,模拟领域专家推理机制 ,建立了蔬菜病虫害多媒体信息咨询系统。本文讨论该系统设计的思路、系统结构和功能 ,介绍系统的特点和适用范围     

多媒体教学在高等教育实践中的应用

多媒体教学在高等教育中具有提高大学生学习兴趣、优化教学内容、增加课堂教学信息量、提高教学效果等多方面的优势，同时高校多媒体教学中也存在课件制作水平不高、不考虑课程特点一哄而上、大学生的教学主体地位没得到体现等一系列问题，并提出了解决这些问题的途径。     

多媒体辅助教育中教师的角色变换与素质要求

在教育教学实践中，有许多教师不能适应新技术给教育教学带来的巨大变化，难以利用先进手段－－多媒体技术胜任教育要求教师在教育观念、信息素养、教育研究等方面具备更新的和更全面的素质，并适时地充当设计者、组织者和帮助者的角色，创造性地开展教育教学工作。     

改革教学方法更新教学手段提高《鱼类学》课程教学效果

阐述了在《鱼类学》教学与考核过程中，分别采取课堂与实验结合、板书与多媒体结合、开卷与闭卷结合等教学与考核方式，取得了良好的教学效果。     

《汽车运用工程》CAI研制

结合教学要求,利用Authorware多媒体平台设计制作了《汽车运用工程》教学课件。课件充分利用多媒体教学的优势,具有生动性、综合性、共享性、协调性、交互性和自主性,且功能完整、界面友好,操作简便,容易使学生更好地学习和掌握该课程。     

《传感器技术》多媒体课件的研制

介绍了《传感器技术》多媒体课件的制作过程及其功能。该课件以Authorware为开发平台,用AutoCAD、Photoshop、Flash等工具软件共同制作完成,将教学内容通过生动形象的图、文、声、像有机组合成多媒体演示系统,同时具有友好的界面和良好的人机交互功能。     

A Review of Probabilistic Risk Assessment of Contaminated Land (12 pp)

Background, Aims and Scope   The management and decisions concerning restoration of contaminated land often require in-depth risk analyses. An environmental risk assessment is generally described as proceeding in four separate steps: hazard identification, dose-response assessment, exposure assessment, and risk characterization. The risk assessment should acknowledge and quantify the uncertainty in risk predictions. This can be achieved by applying probabilistic methods which, although they have been available for many years, are still not generally used. Risk assessment of contaminated land is an area where probabilistic methods have proved particularly useful. Many reports have appeared in the literature, mostly by North American researchers. The aim of this review is to summarize the experience gained so far, provide a number of useful examples, and suggest what may be done to promote probabilistic methods in Europe and the rest of the world. Methods   The available literature has been explored through searches in the major scientific and technical databases, WWW resources, textbooks and direct contacts with active researchers. A calculation example was created using standard simulation software. Results and Discussion   Uncertainty and variability are part of every risk assessment. Much work on risks from contaminated soil has focussed on exposure, and choice and structure of the exposure model is then a basic uncertainty factor. Other factors, e.g. parameter uncertainty, are easier to characterize. Variability can be separated into inter-individual, spatial and temporal components. Both uncertainty and variability in the exposure variables can be investigated using Monte Carlo simulation methods. These simulations enable not only the estimation of the probability for a given risk or exposure, but also add information on the sensitivity of the various input variables. This will assist the assessor in further refining the risk analysis. The large number of applications published encompasses soil contamination by lead, arsenic, chromium, uranium, polychlorinated biphenyls (PCB), polycyclic aromatic hydrocarbons (PAH), hexachlorobenzene, pentachlorophenol and chlorinated solvents. Probabilistic risk assessments have been used in widely different settings, such as the metallurgical industry (mining and smelting operations), manufacturing, gas plants, wood impregnation, infrastructure, and waste landfills. Site-specific remediation goals can be specified using probabilistic methods, and a guideline document has been issued within the US Superfund programme. The usability of probabilistic risk assessment is illustrated by a calculation example. The current Swedish generic guideline value for benzo[a]pyrene in contaminated soil, with ingestion of vegetables as the major route of exposure, is compared with a probabilistic estimate. The toxicological reference value corresponds well with the upper 95th percentile of the estimated variability in intake, but does not account for uncertainty in the partition coefficients. Conclusions and Outlook   The probabilistic approach to risk assessment has proved its value in characterizing variability and uncertainty, and thereby contributing to a more informed and transparent decision-making process. The management of contaminated land is a major environmental application for probabilistic risk assessments. A substantial number of studies have been published and the method is now well established in the scientific community. This development has progressed further in the United States than elsewhere, but similar applications are now being reported from Europe and Asia. Probabilistic risk assessment is used to derive soil guideline values in the United Kingdom, and other countries may be anticipated to follow. However, efficient use of probabilistic methods for risk assessment of contaminated land requires certain components. There is a requirement for quality assurance and transparency that can be met by guidelines specifying data requirements and which items to report on. Both federal and state governments in the United States have issued such guidelines, and we see a similar need from a European perspective. A second component, necessary for a successful implementation of probabilistic methods, is education. We have ourselves developed undergraduate curricula, but we also see a need for continuous education of risk assessors and decision makers. The third component required is case studies, showing how probabilistic risk assessment can be implemented successfully in the cleanup of contaminated land. Most published studies originate from the United States, so here too there is a need for the rest of the world to catch up. In addition to the three components mentioned, there is an obvious need to develop and improve methods and practice of risk communication.     

浅谈多媒体技术条件下大学英语有效教学

探讨了在多媒体技术条件下如何提高大学英语教学有效性问题。基于信息技术的语言教学模式中技术不应当仅仅是传递知识的工具,而是一种参与认知过程的工具。教师应提高应用信息技术水平,充分利用基于计算机的多媒体技术来帮助学习者建构知识,从而到达有效教学的目的。     

果树蔬菜病害模拟与防治多媒体演示系统

为了使农科院校植物病理专业的学生及非病理专业的学生能够对果树蔬菜病害部分的内容有深刻理解并牢固掌握，更快更有地提高学生中种病害的能力，研制了果树蔬菜病害模拟与防治多媒体演示系统；涉及８科７１种果树产在内容，功能齐全，操作简单，视觉，听觉效果俱佳。