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...

background: problem-based learning is a student-centered teaching method that encourages students to become active learners in the classroom and  to improve the learning processes.  the aim of this study was to compare two methods of teaching, problem- based learning (pbl) and lecture-based learning, in an embryology course. methods: this was a semi-experimental study conducted in kurdistan uni...

background: mullerian disorders are present in 5-25% of infertile women. myoma, polyp and endometrial adhesions are among other involved factors in infertility. objective: the aim of this study was to determine the frequency distribution of pregnancy occurrence in infertile women after the diagnostic-surgical hysteroscopy on selected infertile cases including those with abnormal uterine. materi...