1) small population size
小规模群体
2) Population size
群体规模
1.
When the population size reaches the maximum size allowed,it is shrinked to the size of starting point by selection operator of genetic algorithm.
以标准微粒群算法PSO为基础,提出了一种改进的群体规模可变的微粒群算法—VPPSO。
2.
By simulating the population incensement in the human evolution,changing the invariable population size number in the normal genetic algorithm,a new genetic algorithm UGA is proposed that the population size changes with population generations.
实验改变了以往一般遗传算法的群体规模恒定的方法,结合人类进化的发展规律,提出了一种群体规模随遗传代数做锯齿波变化的改进遗传算法UGA,该算法只是使种群规模做上锯齿波的周期性变化,不影响其他操作算子。
3.
Computer simulation was used to determine the random genetic drifts of a biallelic gene locus in closed populations under different initial gene frequencies,population sizes and male-female ratios,based on the assumption that there was no gene mutation and individual immigration between populations.
采用计算机模拟方法研究了不同初始基因频率、群体规模和公母比例下闭锁群体内单个双等位基因座位的遗传漂变。
3) Group size
群体规模
1.
98kg) and age were randomly allocated to investigate the effect of group size(18 and 54 pigs/pen) and toys(no provided and provided) on performance and welfare for 35 days.
98kg)的648头二元杂交生长母猪(大白♂×长白♀)随机分为四组,采用2*2双因子设计,因子一为群体规模,设18头/圈和54头/圈2个水平,因子二为玩具,设无玩具和有玩具两个水平。
2.
The experiment was conducted to determine the effects of group size and toys on growing pigs’welfare and performance.
本文旨在研究群体规模和玩具两种因素对生长猪福利和生产性能等方面的影响。
3.
In wild,they can adjust their group size to accommodate to the environment by themselves.
可是在集约化生产条件下,猪被限定在一定的群体规模下高密度饲养,它们不能自由地进行调整。
4) Variable population size
变群体规模
6) large-scale swarm system
大规模群体系统
补充资料：规模经济/规模不经济
规模经济/规模不经济：规模经济和规模不经济用来说明厂商产量变动从而规模变动与成本之间的关系。对于一个生产厂商而言，如果产量扩大一倍，而厂商的生产成本的增加低于一倍，则称厂商的生产存在着规模经济；如果产量增加一倍，而成本的增加大于一倍，则生产存在着规模不经济。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条