The empirical evidence, such as it is, suggests an altogether different function for yawning—namely, that yawning prepares us for a change in activity level.
很多实验证据证实了打哈欠的另一个不同的功能，它能让我们做好准备，改变活动状态。
2
In this paper, some studies are made for synthesizing strong ground motions near fault by using empirical Greens function.
本文对利用经验格林函数法合成断层附近的强地面运动等问题做了初步研究。
3
In this paper we shall discuss two topics: the empirical distribution function of censored data and the Linear regression with censored data.