Browsing Working Papers by Author "Roy, Debjit"
Now showing items 1-15 of 15
-
Changing landscape of logistics in India with Multimodal logistics parks
Dutt, Avi; Shrey, Apurva; Roy, Debjit (Indian Institute of Management Ahmedabad, 2023-02)Logistics costs in India account for a higher proportion of total value of goods compared to other developed countries. According to the Ministry of Road Transportation and Highways (MoRTH), it was around 13-14% in 2015 ... -
A constrained nash bargaining approach to the stock rationing problem in multi-echelon supply chains.
Roy, Debjit; Raghavan, N. R. Srinivas (IIM Ahmedabad, 2013-12-03)In order to survive in the global volatile market place, supply chain analysts are brainstorming to arrive at robust inventory control policies that prevents inventory worth of millions of dollars to get tied up in the ... -
Exploring the role of IoT in worker safety and productivity
Goyal, Tarini; Roy, Debjit (Indian Institute of Management Ahmedabad, 2022-06-03)This paper analyses the role of the Internet of Things in increasing worker safety and productivity as well as improving performance appraisal methods in the factory setup. It examines how IoT can be used to benefit both ... -
Impact of covid-19 disruptions on the supply chain:insights from India
Shrey, Apurva; Dutt, Avi; Roy, Debjit (Indian Institute of Management Ahmedabad, 2022-06-03)Supply Chains play very important role in driving the economy of the country. COVID-19 pandemic and subsequent lockdowns have disrupted the supply chains of various firms. It has been estimated that the total cost of supply ... -
Location identification for rapid evacuation from a disaster site: a case study from KAPS
Roy, Debjit; Sharma, Anuj; Kumar, Ashish; Saurabh, Vivek (Indian Institute of Management, Ahmedabad, 2014)Robust plans need to be developed for rapidly evacuating victims from a nuclear disaster site. Although nuclear plants are constructed with multiple redundant safety features, the chances of a leak can never be zero. In ... -
Minimizing Customer Waiting Costs for Rental Vehicle Providers using Threshold Reservation Policies
Pazour, Jennifer A.; Roy, Debjit (2013-11-23)Vehicle rental providers o er di erentiated services to reserve and walk-in customers. In this research, we study one such service di erentiation strategy, a vehicle threshold policy, which is to hold vehicles for reserve ... -
Modeling and design of container terminal operations
Roy, Debjit; Koster, M.B.M. De (IIM Ahmedabad, 2014-06)Design of container terminal operations is complex because multiple factors affect the operational performance. These factors include: topological constraints, a large number of design parameters and settings, and stochastic ... -
A multi-tier linking approach to analyse performance of vehicle-based warehouse systems
Roy, Debjit; Krishnamurthy, Ananth; Heragu, Sunderesh; Malmborg, Charles (SSRN, 2016-04)To improve operational flexibility, throughput capacity, and responsiveness in order fulfillment operations, several distribution centers are implementing autonomous vehicle-based storage and retrieval (AVS/R) system in ... -
A multi-tier linking approach to analyze performance of vehicle-based warehouse systems
Roy, Debjit; Krishnamurthy, Ananth; Heragu, Sunderesh S; Malmborg, Charles (SSRN, 2016-03-01)To improve operational flexibility, throughput capacity, and responsiveness in order fulfillment operations, several distribution centers are implementing autonomous vehicle-based storage and retrieval (AVS/R) system in ... -
Planning the activities of doctors in a teaching hospital
Roy, Debjit; Narang, Sahil; Ramani, K. V. (2013-11-26)Doctors in a teaching hospital perform a variety of teaching, research, seminar, and in-patient care activities in addition to managing outpatient volumes. In this paper, we study the weekly activities of a doctor in a ... -
Rise of quick commerce in India: business models And infrastructure requirements
Ranjekar, Gauri; Roy, Debjit (Indian Institute of Management Ahmedabad, 2023-03)The democratisation of mobile internet, increase in e-commerce penetration and omnichannel distribution has led to an expansion of the e-commerce industry. The COVID19 pandemic and the subsequent control measures like ... -
Stochastic modelling of unloading and loading operations at a container terminal using automated lifting vehicles
Roy, Debjit; Koster, Rene De (SSRN, 2015-04)With growing worldwide trade, container terminals have grown in number and size. Many new terminals are now automated to increase operational efficiency. The key focus is on improving seaside processes, where a distinction ... -
Testing the dependence structure of the components of hybrid processes using mutual information
Roy, Debjit; Narang, Sahil; Ramani, K.V. (IIM Ahmedabad, 2013-06)Mutual information is a useful extension of the correlation coecient to study the dependence among multiple random processes. Hybrid processes are multivariate time series with some components continuous time series and ... -
Throughput matching algorithm and stochastic models for analysis of open and closed manufacturing systems
Roy, Debjit; Ravikumaran, Vasudha (SSRN, 2015)Order release policies such as card-controlled CONWIP policy aim at improving system responsiveness and minimizing system-wide inventory levels. It is not clear if order release policies (without card control) can be equally ... -
Throughput matching algorithm and stochastic models for analysis of open and closed manufacturing systems
Roy, Debjit; Ravikumaran, Vasudha (SSRN, 2016-02)Order release policies such as card-controlled CONWIP policy aim at improving system responsiveness and minimizing system-wide inventory levels. It is not clear if order release policies (without card control) can be equally ...