查询词典 premature baby

Premature convergence and weak local optimization are two key problems existing in the conventional genetic algorithm. To overcome the shortcomings, an improved genetic algorithm based on the particle swarm algorithm is proposed.

针对传统遗传算法中存在的易陷入局部最优解和后期收敛速度慢的问题，基于粒子群算法，对传统遗传算法作了改进，提出了一种基于粒子群算法的遗传算法。

Compared with the PID parameter optimization method using the genetic algorithm, the proposed method, which inherits the advantages of the genetic algorithm and the simulated annealing algorithm, can overcome some disadvantages such as premature convergence, weak local searching ability and low computing efficiency.

该方法继承了遗传算法和模拟退火算法这两者的优点，与采用常规遗传算法的PID参数整定方法相比较，这种方法在克服解早熟、增强局部寻优能力和提高计算效率等方面都有明显的改进。

An improved real-code genetic algorithm is designed with different cross, selection and variation operators, aiming at overcoming its inherent shortcomings of premature, dead state convergence and weak mountain climbing during function optimization.

针对实数编码在进行数值优化时固有的过早收敛、停滞现象和弱的爬山能力等缺点，通过设计不同的交叉、变异算子，提出了一种改进的实数编码遗传算法。

Objective To study on the clinical significance of GM-1 in treating the premature white matter damage.

目的探讨神经节苷脂(GM1)在早产儿脑白质损伤治疗中的临床意义。

Objective To investigate the electroencephalogram for evaluation of the prognosis of premature infants with white matter damage.

目的 探讨脑电图对脑白质损伤早产儿的预后评估价值。方法对确诊为WMD的46例早产儿行脑电图检查。

Cigarette smoking is an independent risk factor for the development of premature facial wrinkling.

吸烟是面部皱纹过早发生的独立的危险因素。

Measles can lead to weak immune systems, which may make patients susceptible to xerophthalmia, blindness, and premature death.

麻疹可能削弱免疫系统功能，从而使患者并发干眼症、失明及早产儿死亡的机率增加。

Unable to contain herself any longer, Ma Chin burst out acrimoniously, If this general strike can fizzle out as easily as all that, then it's obvious that it's premature!

玛金也再不能镇静了，立刻尖利地说：照这样说，可见这次总罢工的时机并没成熟！

Unable to contain her self any longer, Ma Chin burst out acrimoniously, If this general strike can fizzle out as easily as all that, then it's obvious that it's premature!

玛金也再不能镇静了，立刻尖利地说：照这样说，可见这次总罢工的时机并没成熟！

There is no premature convergence problem in the new model and parameters used in the model can be adjusted adaptively.

从两个方面改善了单种群的生态计算模型：在新的计算模型中，过早收敛问题不再存在，而且有关的参数能够自适应地调节。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。