注意力的持续时间

Mom's goal is to stretch her attention span.

妈妈的目标就是延长她的注意力持续时间。

The association sports marketing practiceimplementation "take Olympic Games as the master line, take thespecific sports event as supplemented" the policy, adopts the support,the cooperation and so on the many kinds of ways, through theconformity dissemination, makes every effort in the quite long time tomaintain the whole world the audiences to the association attentioncontinually, the smooth rise, thus impetus association brand withsteady steps development.

联想体育营销实践贯彻"以奥运为主线，以特定赛事为补充"的方针，采取赞助、合作等多种方式，通过整合传播，力求在相当长的时间内保持全球受众对联想的注意力持续、平滑的上升，从而推动联想品牌的稳步发展。

But as consumers' attention spans wan, marketing companies have actively tried to address consumers in high-impact ways.

但随着消费者注意力持续时间的越来越短，市场推广公司已经试图采用以强冲力的方式，向消费者传播信息。

In high concentration the shift from the focus of attention is of short duration and relatively infrequent.

这种现象显示出我们注意力持续的时间是如何波动的，因为事实上手表的滴答声一直没有改变。

According mensuration,the tiime of people's holding centralized attention usually doesn't exceed one hour.This is why schools stipulate that the time of every class is 45 to 50 minutes,and there are 10 to 15 minutes rest time at break.

据测定，人持续保持注意力集中的时间一般不超过1小时，这就是为什么学校规定每节课的时间为45~50分钟，课间有10~15分钟休息时间。

"In this trial, risperidone was safe and effective for the treatment of tantrums, aggression and self-injurious behaviors in children with autistic disorder," write Lawrence Scahill and colleagues from the Research Units on Pediatric Psychopharmacology Autism Network.

参加此次试验的101位儿童（82位男孩，19位女孩）的平均年龄为8.8+/-2.7岁，采用risperidone0.5-3.5 mg/日，持续8周治疗的患者中，兴奋性得分降低了56.9%，而安慰剂组降低了14.1%p 作者指出的研究限制包括，观察时间不够长，不能确认risperidone的最小有效剂量，以及研究的注意力集中在特定的行为问题上，而不是孤独症的核心症状。

In his brief studies, those sleeping four to five and a half hours did poorly on tests that measure memory, clear thinking and the ability to pay attention,"and they did progressively worse as the week went on," says David Dinges of the University of Pennsylvania School of Medicine.

在他短暂的研究中，那些睡眠时间在4到5个半小时的人在有关记忆力、清晰的思考问题和集中注意力方面的测试中表现很差。宾夕法尼亚大学医学院的大卫·丁格斯说：&持续时间越长，他们的情况就越糟。&

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。