We show a hardness-preserving construction of a PRF from any length doubling PRG which improves upon known constructions whenever we can put a non-trivial upper bound q on the number of queries to the PRF. Our construction requires only O(log q) invocations to the underlying PRG with each query. In comparison, the number of invocations by the best previous hardness-preserving construction (GGM ...

Throughout his 94 years of life, Carmine Melino brilliantly pursued different professional paths, his life being a constant stimulus for students, colleagues, friends and the family. Following the early formative years of study, here, we briefly list his scientific achievements in Occupational Medicine and Hygiene as well as his broad literary interests. Carmine was an inspiration to his genera...

All the RNMDR registrants are divided into five primary registration groups (PRG): PRG 1 emergency workers 152325 (35,0 %); PRG 2 evacuated and resettlers 12889 (3,0 %); PRG 3 residents (persons living or lived in monitoring territories) 251246 (57,7 %); PRG 4 children bom of emergency workers of 1986-1987 18816 (4,3 %). Fig. 2 demonstrates the distribution of persons registered in the RNMDR on...

In animals metabolic processes, involve complex organic molecules being broken down to simpler molecules, such as carbon dioxide and water. Carbon dioxide waste is removed from the body through respiration. Carbon dioxide content in fresh air is approximately 400 parts per million. In this study, we investigate the relationship between ventilation efficiency and carbon dioxide (CO2) concentrati...