Pull production is a key element for a lean manufacturing system. In pull production, buffer inventories between two processes can be implemented either through a FIFO lane as part of a kanban loop, or through a supermarket, in which case the value stream is split into two different kanban loops. This paper compares the usage of FIFO lanes and supermarkets with respect to the work-in-process in...

This paper implements the inventory model developed in the first part of this paper in a simplified problem to simultaneously reduce costs and risks in JIT systems. This model is developed to ascertain an optimal ordering strategy for procuring raw materials by using regular multi-external and local backup suppliers to reduce the total cost of the products, and at the same time to reduce the ri...

Hurricane forecasts are intended to convey information that is useful in helping individuals and organizations make decisions. For example, decisions include whether a mandatory evacuation should be issued, where emergency evacuation shelters should be located, and what are the appropriate quantities of emergency supplies that should be stockpiled at various locations. This paper incorporates o...

The point of this paper is that if output is durable then optimal behavior of a supplier is characterized by production smoothing. Durability of goods (such as capital) has opposite effects on the supply of the goods. Higher durability on the one hand raises the variability of investment demand for the goods by lowering the user’s cost, which tends to raise the variability of supply; on the oth...

Sustainability assessment of urban water and wastewater infrastructures, especially when it comes to managing existing systems, is paramount importance. Hence, this study presents a comprehensive approach investigate the sustainability real system under different demand management policies (WDMPs) in operation maintenance stage. In regard, life cycle (LCSA) used through its three main pillars, ...

A low cost perspex buffer rod design for the measurement of specific gravity during the processing of industrial food batters is reported. Operation was conducted in pulsed mode using a 2.25MHz, 15mm diameter transducer and the intensity and an analytic calibration curve relating buffer rod output to specific gravity is obtained. The probe design may have application to other similar mixtures o...

This section is devoted to the Economic Production Quantity (EPQ) model, its specialization to the Economic Order Quantity (EOQ) model and its extension to allow backorders. The next section deals with multiple products. The primary driver to hold inventories is the presence of a fixed production/ordering cost that is incurred every time a positive number of units are produced/ordered. We wish ...

This paper exemplifies a framework for development of multi-objective genetic algorithm based job sequencing method by taking account of multiple resource constraints. Along this, Theory of Constraints based Drum-Buffer-Rope methodology has been combined with genetic algorithm to exploit the system constraints. This paper introduces the Drum-Buffer-Rope to exploit the system constraints, which ...

In this paper we introduce a new class of cooperative games that arise from production-inventory problems. Several agents have to cover their demand over a finite time horizon and shortages are allowed. Each agent has its own unit production, inventory-holding and backlogging cost. Cooperation among agents is given by sharing production processes and warehouse facilities: agents in a coalition ...