PARIS — Economic growth among developed nations is likely to accelerate in the first half of this year as strength in the United States and Japan help to compensate for the continuing malaise in Europe, the Organization for Economic Cooperation and Developmentsaid Thursday.

“The global economy weakened in late 2012 but the outlook is now improving for O.E.C.D. economies,” the organization’s chief economist, Pier Carlo Padoan, said in the report.  Read more