Poverty status and expenditure patterns: comparison between elderly and non-elderly households

The purpose of this study was to find out if significant differences exist in patterns of expenditures between elderly and non-elderly consumers, taking poverty status into account. Cluster analysis was used to identify expenditure patterns. Four different expenditure patterns were found. Elderly middle-income and affluent households were more likely to belong to service-using cluster than non-elderly poor households. Nonelderly households were more likely to belong to shelter-dominated cluster than elderly households. Poor households were more likely to belong to homebound cluster, while non-poor households were more likely to belong to car-centred cluster.     

Foundations of Dominant-Strategy Mechanisms

Robert Wilson criticizes applied game theory's reliance on common-knowledge assumptions. In reaction to Wilson's critique, the recent literature of mechanism design has adopted the goal of finding detail-free mechanisms in order to eliminate this reliance. In practice this has meant restricting attention to simple mechanisms such as dominant-strategy mechanisms. However, there has been little theoretical foundation for this approach. In particular it is not clear the search for an optimal mechanism that does not rely on common-knowledge assumption would lead to simpler mechanisms rather than more complicated ones. This paper tries to fill the void. In the context of an expected revenue maximizing auctioneer, we investigate some foundations for using simple, dominant-strategy auctions.     

你要好好睡

对于习惯以工作忙为借口而牺牲睡眠时间的职场人，尤其是第二天还要开车上班的你，熬夜不仅会给身体带来潜在的危险，还有可能正在悄悄侵蚀你的心理和精神健康，增加你患上抑郁症的可能。     

ASEE-EED Revised Bylaws

Moon and Yun justified the optimality of solutions derived from the first order conditions in Kim, Philippatos and Chung. With that optimality of solutions, bounds for the optimal cycle time are derived. Then, using those bounds, a simple algorithm to compute the optimal cycle time is developed.     

Why Option Prices Lag Stock Prices: A Trading-based Explanation

While many studies find that option prices lead stock prices, Stephan and Whaley (1990) find that stocks lead options. We find no evidence that options, even deep out-of-the-money options, lead stocks. After confirming Stephan and Whaley's results, we show their results can be explained as spurious leads induced by infrequent trading of options. We show that the stock lead disappears when the average of the bid and ask prices is used instead of transaction prices. Hence, we find no evidence of arbitrage opportunities associated with the stock lead.     

TECHNICAL NOTE A MODIFIED EOQ MODEL WITH TEMPORARY SALE PRICE DERIVED WITHOUT DERIVATIVES

Most previous works applied differential calculus to derive optimal solutions for economic ordering policy. The formulations are suggested in this short note to show that optimal solutions can be derived algebraically without using differential calculus to treat the EOQ model with a temporary sale price.     

8招化解供应链风险

经济衰退和复苏都会给企业的供应链带来巨大的风险,这里,我们提供8条建议来协助企业更好地管理供应链(客户和供应商)。1可视化风险,做长远打算只有确切了解供应链中的薄弱环节所在,才能很好地控制它。     

The contribution of home economics teaching to nutrition knowledge and food choice among adolescents

The diets of two groups of adolescent schoolchildren living in Lothian were assessed. Children who studied Home Economics at Standard Grade were compared with those who did not. A short questionnaire and a dietary diary were used to establish nutrition knowledge and food choice over a period of 7 days, allowing comparisons to be drawn between students who study Home Economics and those who do not. Nutrition knowledge was better among those studying Home Economics. Eating patterns among those studying Home Economics followed more closely the recommended percentages of dietary energy derived from protein, fat and carbohydrate, but there was also considerable evidence that those studying Home Economics tended to eat less generally and to have lower intakes of micronutrients, such as calcium, iron and folic acid. Possible reasons for the differences in nutrition knowledge and eating habits are discussed, with some indicators for future work in this area.