Selecting Pesticides and Nonchemical Alternatives: Green Thumbs' Rules of Thumb Decision Tools

This study of a sample of home gardeners indicates that rules of thumb, or heuristics, are used to select between chemical pesticides and nonchemical alternatives. Such rules of thumb serve to simplify otherwise complicated choice decisions. Heuristics commonly used to choose pesticides include how safe, effective, efficacious, and economical they are, whereas for alternative products consumers more often take into account convenience, efficiency, competency, and handiness. Generally, in an overall ranking of 24 individual choice attributes, pesticies rank low on these attributes where alternatives rank high and vice versa. Gender, age, and years using pesticides are significantly correlated with pesticide selection.     

安徽省旅游企业信息化管理的重点和难点

信息化是当今世界经济和社会发展的趋势,为全球经济发展提供了新的生产力.为了加快安徽省旅游信息化的建设,根据目前安徽省旅游信息化的现状,站在旅游行业的高度,对旅游行业供应链、价值链进行重新设计,并就重点和难点问题展开专题研究.     

使比较研究可信

:人们在进行宏观社会现象的研究时,方法上有定性与定量之分。定量分析呈现U字形分布,对极少量的N进行研究有案例分析导向,对极大量的N进行研究不利于认识的深化,因此有必要寻找案例研究与变量导向研究之间的中间路线。组合式研究就有很多独特的优点。