Penna, Sandro (2002). «Algo de fiebre»

Æ Sandro Galea Æ

j Abstract Background This study examined the use of professionals for mental health problems among New York City residents who were directly affected by the September 11, 2001 terrorist attacks on the World Trade Center (WTC) or had a probable diagnosis of post-traumatic stress disorder (PTSD) or depression in its aftermath. Correlates of help seeking from professionals for mental health probl...

Random Number Generators (algo)

1 What is bioelectronics ? Sandro

Although the term was first proposed in 1968, the birth of bioelectronics as we know it today is much more recent. In fact, the first meaning of the word bioelectronics was the intermolecular electron transfer found in biological systems [1], while its modern meaning is quite different, as discussed in this chapter. Tony Turner, founder and Editor-in-Chief of the Elsevier journal Biosensors and...

Love kills Penna ageing model

Love may have been a female invention long ago, when the brain of genus homo became large and required more food. Thus the father was needed to help feed mother and baby. Pekalski [1] assumed mate selection to be governed by a Major Histocompatibility Complex MHC. In the same spirit now the sexual Penna ageing model is modified to include mate selection by an additional string of 32 bits for ea...

Analytical solution of a generalized Penna model

In 1995 T. J. Penna introduced a simple model of biological aging. A modified Penna model has been demonstrated to exhibit behaviour of real-life systems including catastrophic senescence in salmon and a mortality plateau at advanced ages. We present a general steady-state, analytic solution to the Penna model, able to deal with arbitrary birth and survivability functions. This solution is empl...