HTML和PowerPoint文件类型的课件的功能分析与比较

本文从课件制作、体现知识结构性、版面显示、内容表现形式、动画效果、教案的播放顺序、学生接受情况、文件传播的容易等角度出发,对HTML和PowerPoint文件类型的课件进行功能分析和比较,建议把课件做成HTML类型文件.     

基于通用串行总线的主机与小型医学仪器互连的研究

目的 探讨实现主机与小型医学仪器互连的方法，以便最终实现小型医学仪器的网络化。方法 本文提出了利用通用串行总线（USB）实现主机与小型医学仪器互连的方案，同时解决了此方案中最关键的技术，即如何利用USB总线实现医学仪器的实时数据采集和传输，具体工作包括硬件设计、固体设计、驱动程序设计和应用程序设计。结果 利用USB总线实现了医学信号的实时数据采集和传输，为下一步实现医学仪器与主机互连打下了基础。结论 利用通用串行总线实现主机与小型医学仪器的互连是可行的。     

浅谈医院局域网的安全管理

阐述了医院局域网安全管理的重要性，针对局域网容易受到的安全威胁，提出具体的安全管理措施。     

Suboptimal Mineral Composition of Cow's Milk Formulas: A Risk Factor for the Development of Late Metabolic Acidosis

ABSTRACT. Late metabolic acidosis was observed in a term baby boy with renal tubular acidosis type 4 who received two cow's milk formulas in succession. Suboptimal mineral composition of the formulas turned out to be an important risk factor for the development of late metabolic acidosis.     

纤维支气管镜下高频电刀术后放置网状支架治疗肿瘤性气道阻塞

目的：观察纤维支气管镜下高频电刀术后放置网状支架治疗肿瘤性气道阻塞的近期疗效。方法：对14例支气管肺癌所致的气道阻塞，进行纤维支气管下高频电刀烧灼切割术后放置网状支架治疗。结果：14例气道阻塞患者临床上气促分级与Kamofsky评分均有明显好转，肺功能指标改善，无明显副反应。结论：纤维支气管镜下高频电刀术后放置网状支架是治疗肿瘤性气道阻塞的有效方法，操作简便易行，值得推广。     

Peripheral Glucose Uptake in Relation to Physiological Levels of Plasma and Lymph Insulin

Abstract. The effects of physiological increments of plasma immunoreactive insulin upon tissue glucose uptake, tissue insulin uptake and lymph insulin levels were studied in the hind-limb (65% muscle, 27% skin and subcutaneous fat) of 38 anaesthetized dogs.
During intravenous glucose tolerance tests, the tissue glucose uptake remained within baseline values, whereas the net rates of glucose utilization and the concentrations of arterial plasma insulin increased as the load of glucose injected was raised. Significant amounts of endogenous insulin were cleared from plasma but were not recovered in lymph.
No glucose response was observed in the hind-limb tissues during intra-arterial infusions of exogenous insulin in conditions of strict normoglycaemia and constant blood flow. The infusions of insulin were designed to simulate the levels of endogenous hormone achieved in plasma during the glucose tolerance tests. Again, a high percentage of the injected insulin was fixed to the hind-limb tissues with no detectable rise of leg-lymph levels. At higher plasma insulin concentrations, both tissue glucose uptake and lymph insulin levels were increased.
The results show that the effect of plasma insulin on glucose uptake by muscle and fat in vivo is a threshold phenomenon. From the present knowledge of the physiology of lymph formation, the threshold phenomenon could largely be accounted for by insulin adsorption to the blood capillary walls.     

ARIMA时间序列和BP神经网络在传染病预测中的比较

目的比较自回归滑动平均时间序列模型和神经网络对传染病的预测效率。方法根据1985—2004年伤寒、副伤寒按季度发病率数据资料,利用dps7．55软件中的ARIMA时间序列、神经网络建立预测模型,用2005--2007年的伤寒、副伤寒季度发病率对二种预测模型进行检验,从而比较二种模型的优劣。结果用ARIMA时间序列分析得到拟合度为50．15％,验证模型的残差平方和为5154．381用神经网络分析得到拟合度为73．12％,验证模型的残差平方和为3559．24。结论神经网络模型更为适用于预测宁波市镇海区伤寒、副伤寒发病趋势。     

一种基于Petri网的面向方面的用例建模方法

对传统的用例建模方法进行扩展,并针对用例描述的文本语言中经常出现的二义性、冲突以及遗漏信息的问题,提出一种基于Petri网的面向方面的用例建模方法。构建了从面向方面用例模型到面向方面Petri网模型的映射规则,引入面向方面的形式化的建模与分析技术,并利用时态逻辑检验织入时机的正确性。最后给出实例和分析,验证了该方法的有效性。