I don't have any article on Corporate HR, but I can give you a brief insight into what happens in Corporate HR. They are the HR policy-making body in a large number of corporates. They translate the Management's Policy into rules, regulations, welfare schemes, performance review, and salary review-related activities.
In other words, there will be dedicated employees, sometimes fresh MBAs, involved in coming up with new schemes, rules, etc., based on various HR theories. In many organizations, Corporate HR is involved in collecting, collating, and coordinating training-related activities from the lowest levels to the top echelons of the organization.
New policies and procedures evolved by Corporate HR in an organization are implemented through the respective Divisions or Departments.
Corporate HR is also involved in interacting with various organizations, sometimes similar in their profile. They also exchange information with other similar organizations to understand what is happening in the respective organizations in terms of IR, salary structure, compensation structure, etc., so that they are more or less at par with other industries in the location.
This is just in brief, and I hope I have covered enough ground to make you understand the topic under discussion.
Best wishes