Investment model variables, particularly satisfaction, were also examined as mediators of the relationship between abuse exposure and commitment. (link.springer.com)
The standard pressure levels are also not direct model variables as such. (julesandjames.blogspot.ru)
Ever since, he has been embroiled in developing a proprietary software «pipeline» for enhancing JunoCam's images, which requires careful calibration to remove noise from faulty detector pixels as well as modeling variables such as the angle of illumination from the sun, the absorption of light by the planet and the trajectory of the spacecraft. (scientificamerican.com)