期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
利用CHOICE命令进行系统的多元配置
1
作者 赵桂华 《电脑知识》 1997年第5期14-15,共2页
一、引 言 在高版本DOS系统中,我们可以利用MENU、MENUCOLOR、MENUITEM、MENUDEFAULT和COMON命令在CONFIG.SYS文件中实现系统的多重配置功能。机器启动后出现系统配置菜单供用户选择,当选择了相应的启动项后,系统会将被选配置项名存放到... 一、引 言 在高版本DOS系统中,我们可以利用MENU、MENUCOLOR、MENUITEM、MENUDEFAULT和COMON命令在CONFIG.SYS文件中实现系统的多重配置功能。机器启动后出现系统配置菜单供用户选择,当选择了相应的启动项后,系统会将被选配置项名存放到%CONFIG%变量中,并传递给AUTOEXEC.BAT主批处理程序,然后执行相应的设置程序,大大方便了用户的使用。殊不知DOS6还提供了一个按键读取命令CHOICE,利用这个交互式命令还可以在主批处理程序中实现类似CON-FIG.SYS中的多重配置功能,从而实现系统的多元配置。下面先让我们了解一下该命令的用法。 展开更多
关键词 DOS CHOICE命令 系统多元配置 操作系统
下载PDF
Chemical deception among ant social parasites 被引量:1
2
作者 Rhian M. GUILLEM Falko DRIJFHOUT Stephen J. MARTIN 《Current Zoology》 SCIE CAS CSCD 2014年第1期62-75,共14页
Deception is widespread throughout the animal kingdom and various deceptive strategies are exemplified by social parasites. These are species of ants, bees and wasps that have evolved to invade, survive and reproduce ... Deception is widespread throughout the animal kingdom and various deceptive strategies are exemplified by social parasites. These are species of ants, bees and wasps that have evolved to invade, survive and reproduce within a host colony of another social species. This is achieved principally by chemical deception that tricks the host workers into treating the invading parasite as their own kin. Achieving levels of acceptance into typically hostile host colonies requires an amazing level of decep- tion as social insects have evolved complex species- and colony-specific recognition systems. This allows the detection of for- eigners, both hetero- and con-specific. Therefore, social parasitic ants not only have to overcome the unique species recognition profiles that each ant species produces, but also the subtle variations in theses profiles which generate the colony-specific profiles We present data on the level of chemical similarity between social parasites and their hosts in four different systems and then discuss these data in the wider context with previous studies, especially in respect to using multivariate statistical methods when looking for differences in these systems. 展开更多
关键词 MIMICRY Social parasites Cuticular hydrocarbons Multivariate statistics
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部