Epidemiologic studies seldom include wealth as a component of socioeconomic status. The authors investigated the associations between wealth and 2 broad outcome measures: mortality and self-rated general health status. Data from the longitudinal Panel Study of Income Dynamics, collected in a US population between 1984 and 2005, were used to fit marginal structural models and to estimate relativ...

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Surprisingly, at the beginning of the 15 century a new way of painting suddenly began. Differently from the elegant and graceful gothic style characterized by figures of dignified beauty living within unreal scenarios rich of precious decorations often of pure gold, the scenes became full of passion, of pain, of sentiments, full of life and suffused in the light of a real landscape that emphasi...

In this paper a novel electronic payment protocol suitable for “peer-to-peer” (P2P) networks is presented. It implements electronic cash-based transactions, between buyers and merchants. It is based on a bank account, though it can be easily extended and can be readily applied to other account payment models like debit cards. The proposed protocol is designed using Millicent’s main concept (scr...

With the unprecedented growth of the Internet, business -to-consumer (B2C) commerce has grown to vast proportions. However, after years of practice, how to promote consumers’ trust towards their storefronts is still the most critical challenge for B2C online merchants (Hoffman and Novak 1996, Jarvenpaa et al. 2000, Kovar et al. 2000). Presently, the main strategy for online B2C merchants is to ...