Abstract In this paper, we propose a new robust cycle-based control policy for single installation inventory models with non-stationary uncertain demand. The policy is simple, flexible, easily implementable and preliminary numerical experiments suggest that the policy has very promising empirical performance. The policy can be used both when the excess demand is backlogged as well as when it is...

We consider the valuation of gas storage on finite horizon. Focusing on the timing optionality of storage we construct a stochastic control model that reduces to solving an optimal switching problem with inventory. Extending the methodology from Carmona and Ludkovski (2005), we then construct a robust numerical scheme based on Monte Carlo regressions. The idea is to simultaneously approximate t...

To explore the burnout situation of teachers in two schools in Macau and to investigate any differences made of demographic characteristics. The relation of burnout on social problem solving and holistic health of teachers is also studied. A self reported questionnaire with the Chinese Maslach Burnout Inventory (C-MBI), Chinese Social Problem Solving Inventory (C-SPSI) and the Body-Mind-Spirit ...

BACKGROUND The relationship between coping styles and mental disorders has received considerable attention and instruments have been developed to assess coping strategies. The measurement by means of category systems has been criticized and a functional hierarchy of action types linked to the adaptive processes is preferred. We aimed to determine which factors may exist within the Brief-COPE (B...

A fuzzy random model of Combined Location Routing and Inventory Problem (CLRIP) has been presented with continuous review inventory policy in B2C distribution environment for the first time. Demands of customers and distribution centers are uncertain and have been assumed to be fuzzy random variables. To solve the model, first the expected value of fuzzy random variable and the possibilistic me...

In this paper, a real-life routing and scheduling problem encountered is addressed. The problem, which consists in optimizing the delivery of fluids by tank trucks on a long-term horizon, is a generalization of the vehicle routing problem with vendor managed inventory replenishment. The particularity of this problem is that the vendor monitors the customers’ inventories, deciding when and how m...