Jeanne Barcelona, Erin Centeio, Sharon Phillips, Dara Gleeson, Kevin Mercier, John Foley, Kelly Simonton, Alex Garn
Comprehensive school health: teachers' perceptions and implementation of classroom physical activity breaks in US schools
Health promotion international
practitioners expressed concern inability accurately estimate costs associated software development concern become even pressing costs associated development continue increase result considerable research attention directed gaining better understanding softwaredevelopment process well constructing evaluating software cost estimating tools paper evaluates four popular algorithmic models used estimate software costs slim cocomo function points estimacs data 15 large completed business dataprocessing projects collected used test accuracy models ex post effort estimation one important result albrechts function points effort estimation model validated independent data provided study 3 models developed business dataprocessing environments showed significant need calibration models softwaredevelopment process models tested failed sufficiently reflect underlying factors affecting productivity research required develop understanding area