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Background: Traceability systems and carbon emissions are two important factors involved in production and distribution activities. The involvement of these two factors in production and distribution activities along the supply chain will ensure the safety and quality of food through the manufacture, packaging and distribution of products with minimal costs and in an environmentally friendly way. Objective: This study aimed to develop a model of canned fish food production and distribution integration by considering traceability and carbon emissions to minimize total costs. Method: A mixed-integer linear programming (MILP) approach was used to develop mathematical models and the optimal solution of the model created was obtained using an open-source spreadsheet solver program. Results: The results show that the proposed models produce the minimum total production and distribution cost with high traceability and low carbon emissions. Conclusions: The sensitivity analysis from this study shows that there is a significant relationship between production, carbon emissions, and the total cost of production-distribution. Moreover, it was concluded that the production level, carbon emission level, and emission threshold can have a significant influence in the generation of the total carbon emissions.

This paper deals with coordinating delivery schedules and inventory replenishments in a supply chain operated under Vendor Managed Inventory (VMI) system. We propose a new model of Vendor Managed Inventory Routing (VMIR) based on the existing Period Traveling Salesman Problem (PTSP) model. The proposed model will be referred to as the Integrated Inventory and Period Traveling Salesman Problem (IPTSP). In the IPTSP, the delivery frequency is treated as a decision variable instead of a given parameter. We formulate the problem and develop a heuristic approach to solve it. We put emphasis on the procedure for seeking the best delivery frequency for retailers called "delivery consolidation". Assuming that each retailer is initially visited every day during the m-day period, the procedure tries to consolidate the current deliveries in order to make a trade-off between traveling costs and inventory holding costs in order to minimize system-wide costs. The numerical experiment results show that by treating the delivery frequency as a decision variable some benefits can be produced.

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The implementation of AEC (Asian Economic Community) leads to demand increase at ports in Indonesia. This increasing demand is followed by operational efficiency at the port as well. In fact, ports in Indonesia have an average dwell time for 5 days. One of the causes of this long dwell time is container transfer inefficiencies during loading process. In this research, we will focus in yard management and increasing land utilization. To increase the land utilization, we develop the space-sharing concept to reduce the initial space needed for a given workload. Since the ships arrivals are also varying, this concept will be possible. We develop the concept by adding uncertainty on number of incoming containers at operational level as the determining factor in planning a shared yard area. We propose a simulation approach to evaluate strategies in making yard template.