Controllability Ensured Leader Group Selection on Signed Multiagent Networks.

Leader-follower controllability on signed multiagent networks is investigated in this paper. Specifically, we consider a dynamic signed multiagent network, where the agents interact via neighbor-based Laplacian feedback and the network allows positive and negative edges to capture cooperative and competitive interactions among agents. The agents are classified as either leaders or followers, thus forming a leader-follower signed network.

Immediately sequential bilateral cataract surgery: a cost-effective procedure.

Objective: The objective of this project was to perform a cost-effectiveness analysis (CEA) of immediately sequential bilateral cataract surgery (ISBCS) versus delayed sequential bilateral cataract surgery (DSBCS) to determine whether ISBCS represents an appropriate, cost-effective way to rapidly rehabilitate a patient's visual impairment.

Design: A systematic review followed by a primary economic analysis with computer-based econometric modeling.

Participants: Not applicable.