We have studied the evolutionary stages of pure e-tailers, click & mortar (C&M) and brick & mortar (B&M) retailers for three points of time: June 1999, June 2000, and June 2001. To evaluate the dynamic stages of etailing business as an innovative venture, we propose four stages: exploration, breakeven, growth, and maturity. The stages are measured by the impact of revenue and income on the firm...

Can the rise in obesity among children be attributed to the intergenerational transmission of parental influences? Does this trend affect the influence of parent's socioeconomic status on obesity? This paper documents evidence of an emerging social gradient of obesity in pre-school children resulting from a combination of both socio-economic status and less intensive childcare associated with m...

OBJECTIVE Hearing impairment is suggested to be associated with depression in the elderly. The present study evaluated the risk of depression after hearing impairment in all age groups matched by age, sex, income, and region of residence. METHODS The Korean Health Insurance Review and Assessment Service-National Patient Samples were collected for a period from 2002 to 2013. Hearing impairment...

Given n agents with who wish to divide m commodities, consider the n-person noncooperative game with strategies consisting of concave increasing utility functions, and whose outcomes are the relative utilitarian solution. Any constrained equal-income competitive equilibrium allocation for the true utilities is shown to ba a Nash equilibrium outcome for the noncooperative game. Conditions are pr...

This paper presents a method to compare indices of inequality in health that are based on short-run and long-run measures of health and income. For pure health inequality (as measured by the Gini coefficient) and income-related health inequality (as measured by the concentration index), we show how measures derived from longitudinal data can be related to cross section Gini and concentration in...

[Purpose] This paper attempted to determine the relationship between physical activity of men from Wrocław and their discretionary income. [Subjects and Methods] The subjects were 1,601 male survey respondents aged from 18 to 65 years old. The International Physical Activity Questionnaire was used for the assessment of physical activity. [Results] Among respondents, low intensity physical activ...

We analyze the taxation of top personal incomes in Germany on the basis of an integrated data file of individual tax returns and a general household survey for the years 1992 2002. The unique feature of this integrated data set is that it includes all taxpayers in the top percentile of the gross income distribution. We show that despite substantial tax base erosion and significant reductions of...

We analyze the taxation of top personal incomes in Germany on the basis of an integrated data file of individual tax returns and a general household survey for the years 1992 – 2002 which includes all taxpayers in the top percentile of the gross income distribution. We show that the distribution of the tax burden is highly concentrated, and that German income taxation has remained effectively p...