This edition has updated material on the National Incident Management System, National Response Plan, National Response Framework, and National Fire Protection Association Standard 1600; coverage of the World Trade Center Site litigation and effects on responders; more on post-traumatic stress disorder; expanded and updated material on the history, ...
Mesocycles are typically 3 to 4 weeks in length but can be a bit longer. Two very common mesocycles are 21 and 28-day training blocks. I will provide an example of a training plan with 21-day mesocycles in my next post.
Basically, duration is a weighted average of the maturity of all the income streams from a bond or portfolio of bonds. So, for a two-year bond with 4 coupon payments every six months of $50 and a $1000 face value, duration (in years) is 0.5(50/1200) + 1(50/1200)+ 1.5(50/1200)+ 2(50/1200) + 2(1000/1200) = 1.875 years.