This paper is devoted to the study of two-part trade policy for two countries, markets, producers under imperfect competition, where standard arguments free are not applicable. The basic model a two-step game with complete but information. optimal government analyzed in terms goals maximizing national welfare. dominates over simple quota and tariff, which its special cases. At same time, govern...

In this study, the factors to affect birth rate in China are analyzed at provincial level. The panel data were collected from 2016 2020 under "two-child policy". Based on random-effects model, disposable income of households, elderly dependency ratio, and public expenditure for medical health care, family planning have a negative relationship with rate. On contrary, consumption Gross Regional P...

Consider a two-level inventory system consisting of one supplier and one retailer. The retailer faces a Poisson demand with a known rate and applies base stock (one-for-one ordering) policy. That is, his inventory position is set to a pre-determined level, so the demand pattern is transferred exactly to the supplier. The supplier has an inventory system and a service unit with exponentially dis...