The relationship between income and health is not fully understood. In theory, income could not only provide access to preventive care and a healthy lifestyle that can help to prevent disease, but also provide access to unhealthy consumption goods such as tobacco and alcohol which raise the risk...

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...