结构化系统分析中处理逻辑表达方法的研究

作者讨论和比较了结构式语言、判断树和判断表这3种用于结构化系统分析的处理逻辑表达方法,针对判断表作为多重嵌套判断处理逻辑的首选表达方法所存在的问题,提出了改进措施,并给出简单实用的判断表到程序代码的规范化转换方法。     

Lorentz空间粒子的广义动量

从协变形式的Hamilton原理得到粒子的运动方程，给出相对论性粒子广义动量用协变矢量表示的正确形式，并讨论了电磁场中带电粒子系统的哈密顿函数，指出一些文献中不当之处。     

Significance of carbohydrate antigen 50 expression in colorectal carcinoma

Objective To evaluate the significance of carbohydrate antigen 50 (CA50) expression in colorectal carcinoma. Methods Immunohistochemical staining was used to detect CA50 expression in 10 cases of normal colorectal mucosa and 40 cases of cancer mucosa. Results The expression of CA50 increased in normal colorectal mucosa, cancer distant mucosa, cancer adjacent mucosa and cancer mucosa, and there were significant differences among them (P<0.05). The expression of CA50 in colorectal carcinoma was correlated with the degree of differentiation, Duke's stage and lymphatic metastases (P<0.05). Conclusion The expression of CA50 can be used as a valuable index in evaluating the biological characteristics and prognosis of colorectal carcinoma.     

作战环境的描述和表达

作战环境仿真是大型军事装备系统仿真试验床的一项基础关键技术,作战环境仿真首先要解决的问题是作战环境的表达方法问题,即如何用数据来表达一个变化的实战环境。提出了一种表达作战环境的数据结构,并在我单位仿真试验床上进行了验证。