An employee transporting problem is described and a set partitioning model is developed. An investigation of the model leads to a knapsack problem as a surrogate problem. Finding a partition corresponding to the knapsack problem provides a solution to the problem. An exact algorithm is proposed to obtain a partition (subset-vehicle combination) corresponding to the knapsack solution. It require...

given a set  of  points in the plane and a constant ,-center problem is to find two closed disks which each covers the whole , the diameter of the bigger one is minimized, and the distance of the two centers is at least . constrained -center problem is the -center problem in which the centers are forced to lie on a given line . in this paper, we first introduce -center problem and its constrain...

Research objectives This is analyze the effect of problem-based learning and gender on students' curiosity, problem understanding, problem-solving abilities. research was conducted two classes Mataram Model X Madrasah Aliyah students who were selected using cluster random sampling technique. Student curiosity data measured a questionnaire instrument, while understanding solving abilities questi...