Urban agriculture is recently being recognized as a distinctive urban land use contributing to greenspaces and food security. The land inventory forms the critical first step in identifying sites for urban agriculture. The authors’ analysis greatly expands on prior land inventory strategies, first analyzing land cover to identify all open areas available for siting urban agriculture. Then in GI...

Aggregate production planning (APP) involves the simultaneous determination of company’s production, inventory and employment levels which fall between the broad decisions of long range planning and detailed short range planning. A mathematical model is formulated to investigate the optimal decision on each planning period. The goal is to minimize the total relevant costs considering time varyi...

Demand planning is the process that helps in making decisions about inventory, in order to anticipate future demands from historical data. In an inventory with hundreds of items, a significant amount of these is subject to erratic demand. For these products, accurate forecasts are essential. This research work aims to show a comparison of ARIMA models and artificial neural networks for forecast...

This paper aims to provide an insight to managers on the availability of simple-to-use Analytic Hierarchy Process (AHP) as a practical tool for inventory management. It provides an example of the useful application of AHP in determining inventory policy for spare parts. It also presents the use of AHP as an analytic planning tool which managers could use to evaluate the feasibility of a desired...

This paper develops a method for solving the single product multi-period production-planning problem, in which the production and the inventory costs of each period arc concave and backlogging is not permitted. It is also assumed that the unit variable cost of the production evolves according to a continuous time Markov process. We prove that this production-planning problem can be Stated as a ...

This paper describes the development of a hierarchical planning and scheduling system for a multiple plant, multiple product, seasonal demand situation. In this hierarchical structure, optimal decisions at an aggregate level (planning) provide constraints for detailed decision making (scheduling). Four levels of decision making are used: first, products are assigned to plants (using mixed-integ...

Aggregate planning (AP) is a crucial step of the production planning procedure. It is the process by which a company determines optimal levels of capacity, production, subcontracting, and inventory for its long term planning. This paper presents a comparative analysis related to the impact of social and economic factors on building reliable aggregate plans for companies operating in an internat...

Considering the competition in today’s business environment, tactical planning of a supply chain becomes more complex than before. In many multi-product inventory systems, substitution flexibility can improve profits. This paper aims to prepare a comprehensive substitution inventory model, where an inventory system with two substitute products with ignorable lead time has been considered, and e...