 Columbus police are stepping up their presence in the short north this weekend. Mayor Andrew Ginther says there will be more uniformed foot and bike patrols, as well as plainclothes officers, in light of a shooting last weekend that injured 10. The city will also be enforcing the juvenile curfew citywide. Children under 13 are required to be home or under the supervision of an adult an hour after dusk. Teens 13 to 17 need to be home midnight to 4.30.