A survey of commercial laundry detergents - how effective are they?: Part III: powders,liquids and hard water

The effectiveness of 42 detergents, 11 non-phosphate containing powdered detergents, 12 phosphate containing powdered detergents, 11 unbuilt liquid detergents and eight built liquid detergents, of varying formulations, in cleaning a standard soiled fabric in water of varying hardness was evaluated. Powdered detergents were found to be significantly affected only at very high water hardness levels. There was no significant difference between washing in warm and hot water for the liquid detergents, except for a melaleucaoil based detergent which performed significantly better in hot water. Increasing water hardness had no significant effect on liquid detergents. Powdered detergents performed better than liquid detergents in cleaning the standard soiled fabric. While no one detergent was significantly better than the others, in general, washing with detergents that contained phosphates did give somewhat better results in warm water. Detergents that contained bleach as an additive did not result in whiter fabric.     

SOME REFLECTIONS ON COMPARABLE WORTH

Despite its somewhat impudent tone, this paper examines a major controversy. "Comparable worth" has its proponents and detractors, but as in most debates, neither side fully appreciates the maintained hypotheses of the other. From an economic point of view, the disagreement seems to boil down to differences of opinion about whether the "excessive supply" of women to "women's jobs" is a result of their different utility functions or of their different constraints. There also has been a serious confusion of the "normative" with the "positive," some oversight of the potentially large regulatory costs that would accompany comparable worth legislation, and a tendency to consider only the partial-equilibrium consequences of these measures. Each of these considerations is examined in detail, with the conclusion that while comparable worth measures might alleviate some inequities in the short term, the long-term consequences could seriously aggravate the very problem the policy was intended to solve.     

The Information Content of Segment Disclosures: Australian Evidence

This paper investigates whether the voluntary decomposition of consolidated earnings disclosures into industry segments has information content in the sense that such disclosures better enable investors to predict earnings. The broad rationale underlying the experimental design is that if segment disclosure does enable investors to better predict earnings then residual abnormal returns (after controlling for unexpected earnings) surrounding the earnings announcements of firms providing segment disclosures should on average be significantly lower than a matched' group of firms that do not provide this type of disclosure. Using a short event window design, our results support this view.     

农民工犯罪类别的决定因素——基于监狱调查数据的实证分析

基于监狱调查数据,本文分析了农村户籍服刑人员和普通农民工之间,以及服刑人员内部在个人基本信息、性格特质和家庭背景三个维度上的差异。研究发现农民工罪犯主要参与暴力犯罪和盗窃。与农民工相比,服刑人员总体上年纪小,教育不足,认知能力和性格特征存在缺陷,兄弟姐妹多,母亲教育程度低。区分不同犯罪类型,以上特征多表现在暴力犯和盗窃犯身上;而涉毒犯和经济犯的特征为进城时间长、认知能力强和无差异的年龄及母亲教育程度。     

A survey of commercial laundry detergents — how effective are they? Part II: liquids

The effectiveness of 11 unbuilt liquid detergents and eight built liquid detergents, of varying formulations, in cleaning a standard soiled fabric in soft water (5 ppm) were evaluated. It was found that in soft water there were no significant differences between washing in warm or hot water with either type of detergent, except for a melaleuca oil based detergent which was significantly better in hot water. However, although not significant, in general, washing with unbuilt liquid detergents did give somewhat better results in both warm and hot water.     

Event Day 0? After‐Hours Earnings Announcements

In recent years, the proportion of after-hours earnings announcements has increased to more than 40%. For after-hours announcements, earnings-related volume and price changes are not observed on the Compustat or I/B/E/S earnings announcement date, but one trading day later. This study demonstrates the importance of accounting for after-hours announcements for event studies around earnings announcements.     

A survey of commercial laundry detergents – how effective are they? Part I: powders

The effectiveness of 11 non-phosphate containing powdered detergents and 12 phosphate containing powdered detergents, of varying formulations, in cleaning a standard soiled fabric in soft water (5 ppm) were evaluated. It was found that in soft water there were no differences between washing with either phosphate or non-phosphate detergent. In general, washing with detergents which contained phosphates did give somewhat better results in warm water. Detergents that contained bleach as an additive did not result in a whiter fabric.