Indian Institute of Management Calcutta

About: Indian Institute of Management Calcutta is a education organization based out in Kolkata, India. It is known for research contribution in the topics: Supply chain & Emerging markets. The organization has 415 authors who have published 1354 publications receiving 21725 citations. The organization is also known as: IIMC & IIM Calcutta.

A cost model for N-version programming with imperfect debugging

Abstract: One of the challenging problems for software companies is to find the optimal time of release of the software so as to minimize the total cost expended on testing and potential penalty cost due to unresolved faults If the software is for a safety critical system, then the software release time becomes more important The criticality of a failure caused by a fault also becomes an important issue for safety critical software In this paper we develop a total cost model based on criticality of the fault and cost of its occurrence during different phases of development for N-version programming scheme, a popular fault-tolerant architecture The mathematical model is developed using the reliability growth model based on the non-homogeneous Poisson process The models for optimal release time under different constraints are developed under the assumption that the debugging is imperfect and there is a penalty for late release of the software The concept of Failure Mode Effects and Criticality Analysis is used for measuring criticality

Performance appraisal politics from appraisee perspective: a study of antecedents in the Indian context

Abstract: Appraisee's perception of appraisal politics (APAP) is conceptualized to be formed by three perceptual dimensions. First is appraiser's manipulation of ratings to achieve their self-serving ends such as own reputation, maintaining good relationships, building in-groups, and handling dependency threats from appraisees. Second dimension constitutes fellow appraisees' upward influence behaviors to get higher ratings and rewards. Third dimension relates to the outcome of appraisal, i.e. pay and promotion decisions that can be discriminatory when performance is ignored. Such actions are detrimental for good performers and performance culture. Drawing from the organizational justice theories, it is proposed that APAP can be mitigated by those appraisal-related structural (e.g. criteria), process (e.g. voice) and contextual antecedents (e.g. relation with appraiser) that enhance appraisee's perceived control, understanding, and prediction of appraisal decision and process. These hypotheses were tested in the Ind...

A heuristic-based approach to integrate the product line selection decision to the supply chain configuration

Abstract: Product platform development (PPD) as an approach to mass customisation (MC) helps an organisation to reduce costs as well as ensure timely deliveries. Varieties are offered to different market segments by combining and incorporating different modules at different levels. Modules at different levels are essentially features that a customer segment is looking for. It is apparent that overall optimisation would require simultaneous consideration of not only PPD but also other supply chain constraints. In this paper, an attempt has been made to develop a mixed integer linear programming (MILP) model for sourcing, production planning, and PPD decisions. Based on analyses of the model, a heuristic solution procedure has been suggested. The heuristic developed in this paper attempts to decompose the problem and then assimilate the outputs from the simpler parts to obtain the final solution. Finally, a simple example to illustrate the solution procedure is presented.

Echelon stock based continuous review (R,Q) policy for fast moving items

Abstract: The superior performance of echelon stock based policies for multi-stage serial and assembly inventory systems has been well established in literature. De Bodt and Graves [1] were the first to develop an echelon stock based continuous review ( R , Q ) model for a two-stage serial system. In this paper, we examine their model for fast moving items from the implementation point of view, and suggest a modification that not only takes care of implementation but also leads to improvement of the model under certain conditions. The results are demonstrated with the help of a numerical example.

A Utility Driven Post Disaster Emergency Resource Allocation System Using DTN

Abstract: Two of the most dominant challenges in post disaster emergency resource allocation are: 1) understanding the exact utility, i.e., exigency, of emergency resources and 2) collecting and transmitting the need for these resources to the control station from where resources are allocated. Measuring the utility of resources with precision becomes tricky in a dynamic post disaster scenario, where demands are constantly evolving and supplies trickle in at an uncertain rate. Moreover, collection and transmission of resource needs of far-flung areas are easier said than done owing to the post disaster disruption of communication infrastructure. These result in the ad-hoc allocation of emergency resources to the shelters. In this paper, we first derive a utility function for dynamically enumerating the shelter specific utility of each emergency resource. Subsequently, we propose an opportunistic knowledge sharing scheme for gathering and disseminating resource needs to the control station using a smartphone-based delay tolerant network. Finally, based on these opportunistically transmitted needs, we formulate a utility driven optimal resource allocation model which minimizes overall resource deficit and total resource deployment time. The proposed system optimally assigns constrained emergency resources to different shelters, so that high-utility resources are deployed fast. The effectiveness of the proposed system is evaluated using ONE simulator and LINGO optimization modeling tool. Exhaustive simulation is done to evaluate the comparative performance of our system with a number of competing schemes. Results show that our system outperforms all these schemes in a fully connected scenario. It is also observed that even in an intermittently connected environment, the performance of our system is almost at par with the competing schemes.