关于课堂多媒体教学的思考

多媒体教学已成为课堂教学的一种常用手段，多媒体教学应从实际需要出发，以提高教学效果为目标；需要教师掌握多种计算机及多媒体知识技能，科学地进行教学设计；教学过程中应发挥多媒体的优势，注重师生交流。对此本文进行了探讨。     

浅谈多媒体教学中存在的问题及对策

分析了目前多媒体教学中存在的一些问题，提出了一些提高多媒体教学质量的途径和方法。     

基于网络环境下的教学设备管理信息系统

本文介绍了教学设备网络管理系统模型及其技术指标、软硬件环境、功能、程序设计和主要特点。     

反坦克武器击中坦克时舱室内有害气体测试方法的探讨

为探讨在模拟实验条件下，坦克受到反我武器攻击后舱室内有害气体的取样方法和分析方法，用3种武器发射3种弹药攻击坦克，在远距离控制取样设备，取样后在实验室进行坦克舱室内有害气体浓度分析，结果取样成功，坦克被击中后，一氧化碳气体含量有明显的增高，氮氧化物、二氧化硫增高幅度不大，氧含量无明显变化，说明对坦克舱室进行远距离现场控制气体采样是可行的；坦克的受反坦克武器打击后，除弹片和冲击波等致伤因素外，还会造成坦克内乘员一氧化碳中毒。     

多媒体网络教学的构成及其解决方案

作为一所教学医院，如何更好的提供教学服务，培养出高质量的军事医疗人员，在未来的战争中做好医疗保障是我们教学的目标。利用计算机多媒体网络技术将临床、科研和教学有效的组织起来，为优化教学内容、提高教学质量奠定了基础。     

Fluctuations in Tumor Blood Flow under Normotension and the Effect of Angiotensin II-induced Hypertension

To elucidate the significance of angiotensin II (AID-induced hypertension chemotherapy, changes of tissue blood flow both in normal subcutis and in tumors (AH109A, LY80) were measured with the hydrogen gas clearance method. A newly-developed anesthetic machine was used to keep the animals' condition constant. Tissue blood flow in normal subcutis and tumors always fluctuated with time under normotension. The nature and the rate of fluctuation in tumor Wood flow were almost identical in two different types of tumors. However, the fluctuation of blood flow in tumor and that in normal subcutis were almost always inversely related when blood flows in these different tissues were measured simultaneously, i.e., when tissue blood flow in normal subcutis decreased, tumor blood flow increased, and vice versa. The findings supported the idea that the connection mode between the tumor vascular bed and normal vascular bed is a parallel circuit. Vascular resistance in the normal vascular bed under All-induced hypertension seemed to be greater than that under normotension, because the All-increased tumor blood flow always exceeded the maximum tumor blood flow under normotension. Due to the fluctuations of tumor blood flow, no-flow or low-flow areas, resistant to delivery of anti-cancer drugs, moved sporadically within the tumor under the normotensive condition. However, good conditions for drug delivery to tumor tissue were induced by All-induced hypertension.     

多媒体技术在医学生物学实验教学中的应用

本文联系医学生物学实验课程和多媒体技术的特点，探讨了多媒体技术在医学生物学实验教学中的应用。指出在基础医学实验教学中教师要利用多媒体技术的优点，结合课件制作和教学中应注意的问题，才能充分发挥多媒体技术在教学中的作用，提高教学质量。     

Embedding Medical Student Computer Tutorials into a Busy Emergency Department

Objectives
To explore medical students' use of computer tutorials embedded in a busy clinical setting; to demonstrate that such tutorials can increase knowledge gain over and above that attributable to the clinical rotation itself.
Methods
Six tutorials were installed on a computer placed in a central area in an emergency department. Each tutorial was made up of between 33 and 85 screens of information that include text, graphics, animations, and questions. They were designed to be brief (10 minutes), focused, interactive, and immediately relevant. The authors evaluated the intervention using quantitative research methods, including usage tracking, surveys of faculty and students, and a randomized pretest-posttest study.
Results
Over 46 weeks, 95 medical students used the tutorials 544 times, for an overall average of 1.7 times a day. The median time spent on completed tutorials was 11 minutes (average [SD], 14 [±12] minutes). Seventy-four students completed the randomized study. They completed 65% of the assigned tutorials, resulting in improved examination scores compared with the control (effect size, 0.39; 95% confidence interval = 0.15 to 0.62). Students were positively disposed to the tutorials, ranking them as "valuable." Fifty-four percent preferred the tutorials to small group teaching sessions with a preceptor. The faculty was also positive about the tutorials, although they did not appear to integrate the tutorials directly into their teaching.
Conclusions
Medical students on rotation in a busy clinical setting can and will use appropriately presented computer tutorials. The tutorials are effective in raising examination scores.     

圆形分布法在蝇类季节消长规律中的应用

目的确定蝇类季节消长的高峰日和高峰时段,为制定蝇类防制措施提供科学依据。方法用圆形分布法统计分析绍兴市区2003-2004年蝇类密度监测数据。结果绍兴市区2003-2004年蝇类平均密度高峰日为8月4日,高峰时段为6月8日至9月30日。其中2003年蝇类密度高峰日为8月11日,高峰时段为6月17日至10月5日;2004年蝇类密度高峰日为7月29日,高峰时段为6月1日至9月26日。结论绍兴市区2年中蝇类消长有明显的季节性规律。