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1)  counterselection
反选择
2)  selective reflection
选择反射
1.
The phenomenon of selective reflection was obviously and the reflected peak was 513nm、493nm and 475nm respectively at 170℃、180℃、190℃.
研制出一种新型的小分子二元胆甾相液晶,并对其光学特性进行研究,实验结果表明,该液晶有明显的选择反射现象,加热温度在170℃、180℃、190℃时,其正反射中心波长分别为513nm、493nm和475nm。
2.
Such distinctive optical properties as opticity and selective reflection of chiral agent-doped PDLC have widely been applying in the field of light filter,grating,and reflective display,etc.
手性掺杂的聚合物分散液晶的旋光性、选择反射等独特的光学性能被广泛应用于滤波片、光栅、反射显示等方面。
3)  negative selection
反面选择
1.
In this paper, negative selection algorithm for artificial immune system (AIS) is improved by adopting genetic algorithm, in which Euclidean distance is selected as fitness function, to generate detectors (antibodies).
将人工免疫系统的反面选择算法作了改进,在产生检测器时,利用了遗传算法,并将欧几里德距离作为遗传算法中的适应函数。
4)  selection response
选择反应
1.
The effects of the population size,boar to sow ratio,and the number of pigs tested per litter on the selection response and its coefficient of variation,inbreeding coefficient of sire line selection were studied.
利用MonteCarlo模拟,研究了群体大小、公母比例和每窝测定猪头数对父系猪的近交系数、选择反应及其变异系数的影响。
2.
The results of selection response bioassay showed that the adults were significantly attracted to powder and their extracts of plant spices,Murraya paniculata,Flos magnoliae and Zanthoxylum bungeanum,the highest response index were 60.
在室内测定了烟草甲对20种植物材料及其提取物的选择反应。
5)  response selection
反应选择
1.
METHODS: Twelve young healthy male performed 6 kinds of selective attention tasks, which measured the ability of encoding, response selection and motor adjustment before and after 32 hour sleep deprivation.
方法 :1 2名健康男性在 32h睡眠剥夺前后完成6种模式的选择性注意任务 ,该 6种模式任务测量选择性注意过程中的刺激编码、反应选择、运动调节阶段的变化特点 。
6)  negative selection
反向选择
1.
Taking state symptoms as antigens,and detectors under different fault modes as antibodies,the normal conditions and anomaly are distinguished via negative selections.
以状态征兆为抗原,各种故障模式下的故障检测器作为抗体,通过反向选择机制判别正常/异常状态,利用克隆选择原理进化学习获得能识别抗原结构的记忆抗体,根据最大故障隶属度诊断故障类型。
2.
This paper brought forward a new immune algorithm, multi-level negative selection algorithm.
提出了一种改进的人工免疫系统算法——逐级反向选择算法,与Forrest提出的反向选择算法比较,在探测子的生成效率上有了本质性的提高。
3.
Based on inheriting ideals of negative selection and immune suppression ,the algorithm signs antibody with real encoding instead of binary encoding so as to avoid the frequent decode operations and improves the efficiency of detection at the same time .
该算法借鉴了反向选择和免疫抑制思想,用实数编码来表征故障检测器,避免了二进制编码频繁的解码运算,提高了检测效率。
补充资料:反应选择性
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性质:又称反应专一性。一个化学反应若同时可生多种产物,其中某一种产物是最希望获得的,则这一种产物产率的大小代表了这反应选择性的好坏。例如将萘氧化制苯酐,同时会生成二氧化碳和碳,后二者都是不希望得到的产物。萘转化为苯酐的份额愈高,则反应的选择性也愈好。反应选择性是评价一个反应效率高低的重要标志。

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