Saturday, December 22, 2012

Five Years Since Surgery

Wow!  It's been five years since I started this blog.  That was a few months after surgery, which occurrred, if I remember correctly,  on the day of the winter solstice.   One of my posts showed a survival  (survivorship ) curve which flattened out after five years.  The slope  (loss rate) likely approaches that of the general population (with some age adjustments).   This area of statistics is called survival analysis .   Survivorship curves come in several shapes. Here are some examples for different times and countries.  The mid-life slope for Europe is about 0.5% per year. 

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Utility Pole Replacement in Cambridge (Riverside)

Last night a wooden  utility pole  cracked at the base and fell toward the neighboring pole across the street. This caused the wires to d...