Laplace-normal mixtures fitted to wind shear data

A mixture model with Laplace and normal components is fitted to wind shear data available in grouped form. A set of equations is presented for iteratively estimating the parameters of the model using an application of the EM algorithm. Twenty-four sets of data are examined with this technique, and the model is found to give a good fit to the data. Some hypotheses about the parameters in the model are discussed in light of the estimates obtained.     

The development and construct validation of a consumer satisfaction questionnaire for psychiatric inpatients.

A consumer satisfaction scale was developed for psychiatric inpatients. The scale was administered to a state-wide sample of (n = 366) patients discharged from acute psychiatric units throughout Missouri. The scale was factor analyzed and given to another sample of (n = 390) discharges. Three out of five factors that were found in the first sample were replicated in a factor analysis of data from the second sample. Acceptable coefficient alphas were obtained on all three factors, demonstrating internal reliability. The three factors were labeled Treatment Effectiveness, Trust of Staff, and Hospital Environment. Comparable levels of satisfaction with prior studies were found on the first general satisfaction factor of Treatment Effectiveness. Subjects discriminated areas of satisfaction by expressing higher levels of dissatisfaction on the factors of Trust of Staff and Hospital Environment.     

早期西夏语文学研究概述

1931年苏联杰出的西夏学者Н.А.聂历山首次对国际西夏学研究的早期历史作了简要回顾,全面介绍了19世纪末20世纪初各国西夏学研究的重要成果,对西夏文字的创制、构成、发音、推广及其重要辞书、文献,尤其对西夏文释读作出重大贡献的《掌中珠》都作了生动有趣的描述。对我们了解西夏研究历史,总结前辈学人的经验教训,借鉴和完善方法理论,促进西夏研究的繁荣有着重要意义。现据《西夏语文学》译出,希望能为学界提供一些有价值的线索。