中文摘要：

对现有的软件老化和抗衰研究进行了梳理.首先对软件老化的成因进行了描述.然后分析了现有的软件老化和抗衰的方法：基于时间的抗衰方法和基于检测的抗衰方法.之后对识别软件老化的参数进行了分类：资源消耗参数和性能参数,并对遭受软件老化影响的系统类型进行了分类：安全性系统,非安全性系统,未指定系统.其后由于抗衰操作会带来直接和间接的经济损失,因此对执行抗衰操作的系统层次进行了分层.最后指出了研究中存在的不足和以后的研究方向.

英文摘要：

In this paper, we investigate the study of software aging and rejuvenation. Firstly, the cause of software aging is analyzed. Secondly, methods of software aging and rejuvenation： rejuvenation method based on time and rejuvenation method based on detection, are described. Thirdly, software aging indica- tors. resource parameters and performance parameters, are introduced and systems subjected to software aging are classified as security system, insecure system, and unspecified system. Fourthly, because rejuve- nation can take direct and indirect economic losses, the granularities of software rejuvenation are analyzed. Finally, the deficiency in present research is also discussed; and some future research directions are pointed out.