Browsing Physics (Scholarly Publications) by Author "Richmond, Peter"
Now showing items 1-6 of 6
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Can soap films be used as models for mortality studies?
(2018)We report studies of the life expectancy of sets of parallel liquid films made from surfactant solution and contained in cylindrical perspex tubes. The tubes are sealed at the bottom and vertically placed. From our analysis ... -
Distributions of certain market observables in an on-line betting exchange
(2011)We analyze high frequency time series of odds and trading volume as extracted from markets on an on-line betting exchange, Betfair.com. As in financial markets, the probability distributions for the change in the market ... -
Dynamics of money and income distributions
(2005)We study the model of interacting agents proposed by Chatterjee et al that allows agents to both save and exchange wealth. Closed equations for the wealth distribution are developed using a mean field approximation. We ... -
Mortality: a physics perspective
(2021)One of the many interests of the late Dietrich Stauffer was the modelling of mortality. Here we review the features of mortality data for various biological species. Age specific mortality (death rate) leads to a discussion ... -
On the relationship between income, fertility rates and the state of democracy in society
(2016)Empirical data for 145 countries shows a strong correlation between the gross national income per capita and the political form of their governance, as specified by the so-called democracy index. We interpret this relationship ... -
Physical models of infant mortality: implications for defects in biological systems
(2020)Reliability engineering concerned with failure of technical inanimate systems usually uses the vocabulary and notions of human mortality, e.g., infant mortality vs. senescence mortality. Yet, few data are available to ...
