Volume 4 Issue 4
Authors: Peng Xu
Abstract: Most of the traditional models in inventory purchase ignore the financial states of enterprises and can result in infeasible practices in real systems. This paper attempts to incorporate inventory-based financing into order decisions. Instead of setting a known, exogenously determined budgetary constraint as most existing models suggest, we consider inventory management with financial constrait. Given seasonal commodities, regarding newsboy model as the archetype and Stackelberg game as analysis method, we discuss the inventory model from two aspects: enterprises purchase a single product, and they purchase multi-products. Moreover, in the case of multi-products, we discuss the model from four aspects classified according to purchasing order and whether initial capital remains or not.
Keywords: SMEs; Economic Order Quantity; Inventory Financing
Authors: J-F. K. Akinbami; R. O. Eni; J. B. Akarakiri
Abstract: The study analysed the economic viability of wind energy alternative for generating 19 MW of electricity in Nigeria based on the Renewable Energy Master Plan (REMP) for the country. It also assessed the barriers to and drivers of wind energy utilisation in Nigeria. This was with a view to making appropriate strategic recommendations to guide policy makers in the implementation of wind power projects in the country. The study covered stakeholders in the electricity industry in both public and private sectors. Questionnaire and publications were used for data collection. The data collected were analysed using statistical and engineering economic methods. The results identified ten barriers to and seven drivers of wind energy utilisation in Nigeria. At the present tariff of Nigerian Naira (NGN), NGN12.12/kWh of electricity and diesel fuel cost of NGN160.00/litre, neither grid connected wind power nor off-grid wind/diesel hybrid power systems are economically viable. With the investment and operational costs remaining constant and varying the tariff upward, it was discovered that at a tariff of NGN18.00/kWh of electricity, the grid connected wind power system has a positive Annual Worth value. 937057.2 tons of GHG emissions could be avoided annually by installing 19 MW of wind energy as an alternative electricity generation source to diesel fuel in Nigeria.
Keywords: Barriers; Drivers; Engineering-Economy Methods; Nigeria; Wind Power