deliberate study

See: care, diligence
References in classic literature ?
Although much remains obscure, and will long remain obscure, I can entertain no doubt, after the most deliberate study and dispassionate judgment of which I am capable, that the view which most naturalists entertain, and which I formerly entertained--namely, that each species has been independently created--is erroneous.
As currently written and without further deliberate study, The Florida Bar strongly opposes and will advocate against the following legislative bills that would significantly alter Article V of the Florida Constitution and adversely affect the administration of justice in this state:
Subjects stressed that the use of humor is most effective when it is deliberate, but are able to use that deliberate study of humor in a natural way, according to their personality type.
We just think there needs to be a more deliberate study before we jump into something that would make it easy.
Atrocities - whether they claim Chinese students, Hutu villagers, or old Bosnian women trying to flee into the woods - should be labeled for the unspeakable evil which they are and, most importantly, should be made the subject of deliberate study in schools.
Amgen, in its testimony, also highlights the potential risks to patient care of prematurely implementing a new payment system that bundles dialysis services with separately billable dialysis drugs without proven and deliberate study and analysis, as is currently mandated.
Our thorough and deliberate study of the marketplace produced a powerful result: the partnership of two leading companies that can extend their existing infrastructures to quickly build an unparalleled on-line service with immediate and longer-term benefits.