PURPOSE To determine whether, similar to ultrasound phaco-emulsification, applied energy and surgery time decrease using phaco-chop nucleus fragmentation method compared to divide and conquer technique using the fluid-based system. METHODS This prospective, comparative, randomized clinical study included patients with cataract who were randomly assigned to use either standard divide and conqu...

The measure and conquer approach has proven to be a powerful tool to analyse exact algorithms for combinatorial problems, like Dominating Set and Independent Set. In this paper, we propose to use measure and conquer also as a tool in the design of algorithms. In an iterative process, we can obtain a series of branch and reduce algorithms. A mathematical analysis of an algorithm in the series wi...

Spectral clustering is one of the most popular methods. However, how to balance efficiency and effectiveness large-scale spectral with limited computing resources has not been properly solved for a long time. In this paper, we propose divide-and-conquer based method strike good between effectiveness. proposed method, landmark selection algorithm novel approximate similarity matrix approach are ...