Browsing Working Papers by Author "Ravichandran, N."
Now showing items 1-17 of 17
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Analysis of (S, s) inventory system with decaying items
Srinivasan, S.G.; Ravichandran, N. (2010-03-14)This article obtains the stationary distribution of the inventory level of an (S, s) inventory model with decaying items. The demand to this inventory system is governed by a general renewal process. Items decay at a ... -
Analysis of a two-unit parellel redendant system with phase type failure and general repair
Ravichandran, N. (2010-03-20)Explicit expressions for the Laplace transform of the reliability and availability of a general two-unit parallel redundant system are obtained. The Mean time to system failure and steady state availability are deduced as ... -
Analysis of two-unit parallel redundant system - a review
Ravichandran, N. (2010-03-13)Ever since Gaver (1963) made an attempt to analyse a two unit parallel redundant system, several attempts have been made by many applied probabilists, engineers to analyse two-unit parallel redundant systems. While various ... -
Correlation functions in reliability theory
Subramanian, R.; Ravichandran, N. (2010-03-13)The point process induced by the stochastic behaviour of a two-unit warm standby redundant repairable system is studied. Expressions for the product densities of the events corresponding to the entry into each of the states ... -
Finite horizon inventory model: an operational framework
Ravichandran, N. (2009-12-12)We paper present a simulation based decision support system to decide the inventory ordering policy in the context of a single commodity, multi pack, and finite horizon situation. The model addresses the decision choice ... -
Improving In-plant Logistics by Process Reengineering: Case Study
Ravichandran, N. (2009-09-02)This paper documents the experience of redesigning in-plant logistics operations of a large petrochemical complex in India. The complex under reference is expected to have a traffic volume of one truck per one minute by ... -
Managing Bullwhip Effect: Two Case Studies
Ravichandran, N. (2009-08-08)The purpose of this article is to present two examples based on real life experiences where the Bullwhip effect in supply chain is considerably reduced. Both examples relate to the consumer durables industry in India. The ... -
Models in Management Science: Issues in Implementation
Ravichandran, N. (2009-08-22)Based on an empirical analysis of several real-life case studies in this paper, we identify the key drivers for maximizing the chances of successful implementation of management science models. The choice of (technique) ... -
Multi-item (S, s) inventory model with poisson demand general lead time and adjustable reorder time
Srinivasan, S. K.; Ravichandran, N. (2010-07-22)Stochastic Multiple Item Inventory System of (S, s) type is studied with general lead time distribution and Poisson demand. The demands occur according to Poisson process for one unit of a specific item at a time. The ... -
A note on (S,s) inventory policy
Ravichandran, N. (2010-03-14)This article obtains the stationary distribution of the stock level of a continuous review (S,s) Inventory policy with the following characteristics. The demand rate is a constant and unit quantity is demanded whenever ... -
Process oriented approach to waiting line management in a large pilgrimage center in India: a case study
Ravichandran, N.; Rao, I.V. Subba (2010-04-03)This article documents an innovative approach to manage waiting line in the largest pilgrimage center in the world. By a judicious combination of process orientation and advances in Information Technology, the pilgrimage ... -
Reviving Gujarat State Road Transport Corporation: An Aengda for Action
Ravichandran, N.; Surya Prasad, M.V.N. (2009-08-22)In this article, we examine in detail the reasons related to the declining operating and financial performance of Gujarat State Road Transport Corporation (GSRTC). The contribution of various environmental and governance ... -
Transformation from rule bound government agency to a Customer centric service facility: The case of Indian Passport Offices
Ravichandran, N.; Bahuguna, Doorva (2009-09-02)This paper documents the existing systems, procedures and performance of regional passport offices in India. The system today is administered by rules and procedures. The average (response) time to obtain a passport by an ... -
Transient analysis of multiple unit reliability systems
Sharma, O. P.; Ravichandran, N. (2010-03-14)The 'inverted-U' relationship between stress and performance is well-known. It is reasonable to assume a similar relationship between stress and creativity. However, very little is known about the reverse relationship; the ... -
Tuberculosis control in developing countries: a generalized community health worker based model
Ravichandran, N. (2009-12-12)This paper documents the BRAC model for TB control. We introduce the concept of value chain, in the context of TB control. Based on the concept of value cahin, the logic for the effectiveness of the BRAC model is discussed. ... -
Vision 2020: The Role and Scope of Operations Research Models
Ravichandran, N. (2009-08-21) -
World Class Logistics Operations: The Case of Bombay Dabbawallahs
Ravichandran, N. (2009-07-25)The Bombay Dabbawallahs operation is widely recognized as an outstanding example of excellence in Logistics. It is often quoted as a standard example of six sigma implementation in the Indian context. Because of its ...