This article is concerned with the clinical trials in which the compliance is measured with random errors 本文考虑一类临床试验中的解释变量即依从性( compliance )有随机量测误差的情形。
Moments are commonly used in statistics to characterize the distribution of random variables , and . similarly , in mechanics to characterize bodies by their spatial distribution of mass 矩在统计学中用于表征随机量的分布,而在力学中用于表征物质的空间分布。
Its arnplit ' ude and phase preserve peotation , single measurement or limited measurements could n ' t present the real character of sound field , so it will be more difficult to localize a source by matched field processing or get high accuracy of source localizaion 而声压是一个随机量,幅度和相位存在起伏,单次测量或少量有限次测量不能完整表达声场特性,这就很难准确进行匹配场声源定位,其精度得不到保证。