UW-Madison will give targeted raises to about one-third of its faculty and academic staff members in an effort to make salaries more competitive and buoy spirits amid a four-year dry spell in across-the-board pay increases. The new initiative, described in a memo to university administrators that was to be sent out Tuesday, will mean raises of at least 5 percent for some high-performing staff members who are at risk of leaving or underpaid compared to those in similar jobs. Paul DeLuca, UW-Madison?s provost, described the plan as “retention on steroids.”