Subramanya K N

This paper discusses on the use of discrete simulation model to design and analyse the cellular network. The conceptual network model was developed to understand the call flow processes using simulation software ARENA 9.0. The model was analysed for major bottleneck processes under various scenarios including normal traffic intensity, worst day traffic intensity and ideal day traffic intensity. The various performance parameters of cellular services which are measured includes: value added time (VAT) in the system, non-value added time (NVAT) in the system, number of calls request denied, number of calls dropped and call duration. The work includes the adaptation of the simulation model using ARENA to analyse cellular networks. The performance analysis reveals a large percentage of the time in the call set up processes is spent on non-value added activities. Recommendations for improvements in the call set up processes have been proposed for future consideration along with action points for improving operational efficiency. Copyright � 2015 Inderscience Enterprises Ltd.

This paper is the result of a work carried out in analyzing the performance of a two stage supply chain network (SCN). The work has been undertaken at two electronic component manufacturing companies. Company A, a sister concern of an electronic company, manufactures primary components namely - deflection yokes, fly back transformers and tuners. The Company B, comprising of three subsidiary business units, is a second tier supplier to an electronic product company and a dedicated supplier to Company A. They manufacture plastic components like bobbins, resin cases and tube cases, all of which are used as components for the production of yokes and transformers. After studying the existing system, the objectives set were to reduce the supply chain lead-time at Company A, and reduction of inventory levels at Company B. A model was developed using ARENA, a simulation software package for company A. The results included a reduction of 32% in the lead-time for fulfilling an order at company A. The delivery performance to commitment date also increased to a high of 76% from the earlier 20%. Company B on the other hand, had 40-50% reduction in raw material inventories. The finished goods inventories came down to 1-1.5 days of supply from an earlier figure of 8-14 days of supply in company B.

Performance measurement (PM) of supply chain is gaining more interest in researchers and practitioners in this globalised era. It is a powerful tool which helps organisations to effectively and efficiently manage their resource utilisation and achieve their goals and objectives. However, literature reveals that medium scale organisations have paid little attention to performance measurement system (PMS) design and implementation. This paper is an attempt to explore and investigate issues concerning the design and implementation of PMS in Indian manufacturing industry. An empirical survey was conducted in Indian medium scale industries to explore the dimensions and characteristics of PMSs. The study highlighted that medium scale enterprises in India pay less attention to integration of supply chain and use of technology in their business processes. It revealed the continuing importance given to financial measures by these industries despite the increasing emphasis put on non-financial measures in the literature. � Copyright 2013 Inderscience Enterprises Ltd.

In today's competitive world, performance measurement of the supply chain is the key for effective supply chain management. The performance measurement can be utilized to describe and review the historical performance, as well as to set performance targets for the future. This paper aims to address the dearth of research in performance measurement systems and performance metrics of supply chain by reviewing the contemporary literature. The paper lists more than 60 references for further study. � 2009 IEEE.