Mathematical methods and models for radiation carcinogenesis studies

Research on radiation carcinogenesis requires a twofold approach. Studies of primary molecular lesions and subsequent cytogenetic changes are essential, but they cannot at present provide numerical estimates of the risk of small doses of ionizing radiations. Such estimates require extrapolations from dose, time, and age dependences of tumor rates observed in animal studies and epidemiological investigations, and they necessitate the use of statistical methods that correct for competing risks. A brief survey is given of the historical roots of such methods, of the basic concepts and quantities which are required, and of the maximum likelihood estimates which can be derived for right censored and double censored data. Non-parametric and parametric models for the analysis of tumor rates and their time and dose dependences are explained

Present and Future CP Measurements

We review theoretical and experimental results on CP violation summarizing the discussions in the working group on CP violation at the UK phenomenology workshop 2000 in Durham.Comment: 104 pages, Latex, to appear in Journal of Physics

Is monetary discipline a precondition for the effectiveness of Iran’s export promotion policies?

In the last decade, Iranian authorities have implemented a number of trade reforms and export stimulating policies. They have also tried to stabilize the dollar exchange rate and eliminate the black market premium. These policies have had little, if any, lasting favourable effect on non-oil exports. One conjecture may be based on the inconsistency of their monetary policy: as money supply is used independently-without any regard for trade reforms and export promoting policies-to accommodate government's fiscal needs, its inflationary consequences undermine export incentives. We use 1982:Q1-2000:Q2 data to estimate the response of exports to a one-off rise in money supply and find that the results support the above conjecture. Copyright © 2005 John Wiley & Sons, Ltd.