The problem of packing equal spheres in a spherical container is a classic global optimization problem, which has attracted enormous studies in academia and found various applications in industry. This problem is computationally challenging, and many efforts focus on small-scale instances with...

Due to the economic liberalization processes and the ongoing opening of the Chinese economy for foreign trade and investment, which have been carried out since 1980, Chinese consumer goods markets have been transformed from sellers markets into buyers markets throughout the last years. In such...

The standardization of compulsory education schools is an essen-tial measure to promote education balance and improve education quality. However, when the implementation effect of this policy was evaluated, the improvement of input factors such as facilities and equipments, teaching faculty and...

This paper discusses the Pareto-stable mechanism and its algorithm for many to many matching problem with quota. Firstly, we propose a Pareto stable matching algorithm, this algorithm consists of two subroutines called modified TTC algorithm and eliminate PI cycle algorithm. Secondly, we propose...