Indian Institute of Management Raipur

Raipur, India

Indian Institute of Management Raipur

Raipur, India
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Pal D.,Indian Institute of Management Raipur | Mitra S.K.,Indian Institute of Management Raipur
Energy Economics | Year: 2017

This paper evaluates the association between crude oil prices and world food price indices, first within general space and time, and then within the combined time-frequency sphere. Monthly price data spanning from January 1990 to February 2016 were used for the analysis. The Johansen cointegration test conducted within the time domain confirmed the statistically significant cointegrated relationship between crude oil prices and the price indices of food and its sub-categories, such as dairy, cereals, vegetable oil, and sugar; however, frequency information was not accounted for. To incorporate both the time and frequency features of the data, we used a wavelet method that has shown that the world food prices, along with the prices of cereals, vegetable oils, and sugar, co-move with and are led by crude oil prices, results that remain relevant from the short-run policy perspective. The outcome of Toda–Yamamoto causality confirmed the spillover of crude oil price changes to the world food price index also in the long run. The paper ends with the policy implications of these results. © 2017 Elsevier B.V.

Kim H.-W.,Yonsei University | Chan H.C.,National University of Singapore | Gupta S.,Indian Institute of Management Raipur
Information Technology and People | Year: 2016

Purpose – The purpose of this paper is to : first, examine information systems (IS) infusion from a user commitment perspective, and second, examine the formation of user commitment toward the use of IS in terms of job design. Design/methodology/approach – This study adopts a survey approach with structural equation modeling to test the developed research model and hypotheses. Findings – A survey of 236 enterprise system users shows that user commitment has a positive effect on IS infusion. User commitment, in turn, is influenced by task technology fit, technology self-efficacy, and task autonomy. Further mediation and direct effects to IS infusion are explored. Research limitations/implications – This study offers implications for research, such as explaining a driver of IS infusion; and extending commitment theory by finding antecedents of user commitment. Practical/implications – The results of this study offer suggestions to management on how to improve IS infusion in terms of user commitment and, consequently, how to develop user commitment based on the socio-technical system (STS) design. Social/implications – The study highlights the critical impact of technology autonomy on IS infusion. An individual user’s authority in using and regulating the system is required for IS infusion. Originality/value – This study has proposed a theoretical model of IS infusion based on commitment and socio-technical job design factors. © 2016, © Emerald Group Publishing Limited.

Chattopadhyay M.,Indian Institute of Management Raipur
Theoretical and Applied Climatology | Year: 2015

The present paper reports a study, where growing hierarchical self-organising map (GHSOM) has been applied to achieve a visual cluster analysis to the Indian rainfall dataset consisting of 142 years of Indian rainfall data so that the yearly rainfall can be segregated into small groups to visualise the pattern of clustering behaviour of yearly rainfall due to changes in monthly rainfall for each year. Also, through support vector machine (SVM), it has been observed that generation of clusters impacts positively on the prediction of the Indian summer monsoon rainfall. Results have been presented through statistical and graphical analyses. © 2015 Springer-Verlag Wien

Pal D.,Indian Institute of Management Lucknow | Mitra S.K.,Indian Institute of Management Raipur
Transportation Research Part A: Policy and Practice | Year: 2016

By using the directional distance function (DDF) of data envelopment analysis (DEA), this study measures the technical efficiency of 37 Indian state road transport undertakings (SRTUs) for the year 2012–13. We employ the DDF as a tool for analyzing a joint production function with both desirable and undesirable outputs (i.e., the number of accidents). A comparison between the results with and without accidents shows that several SRTUs have experienced significant changes in their efficiency scores as well as in their rankings after accounting for the undesirable output. This indicates the importance of including the number of accidents – a safety standard – as representative of the undesirable output in computing the efficiency scores of SRTUs. The results of the Tobit model indicate that SRTUs with greater vehicle productivity are more efficient under both conventional DEA and DDF approaches. We also employed zero-truncated negative binomial model to assess the factors influencing the number of road accident experienced by the Indian SRTUs and found that the accident count was significantly influenced by fleet utilization and vehicle productivity. © 2016 Elsevier Ltd

Pal D.,Indian Institute of Management Lucknow | Mitra S.K.,Indian Institute of Management Raipur
Theoretical and Applied Climatology | Year: 2016

This study used a quantile autoregressive distributed lag (QARDL) model to capture asymmetric impact of rainfall on food production in India. It was found that the coefficient corresponding to the rainfall in the QARDL increased till the 75th quantile and started decreasing thereafter, though it remained in the positive territory. Another interesting finding is that at the 90th quantile and above the coefficients of rainfall though remained positive was not statistically significant and therefore, the benefit of high rainfall on crop production was not conclusive. However, the impact of other determinants, such as fertilizer and pesticide consumption, is quite uniform over the whole range of the distribution of food grain production. © 2016 Springer-Verlag Wien

Yang S.,Zhejiang University of Finance and Economics | Lu Y.,Huazhong University of Science and Technology | Gupta S.,Indian Institute of Management Raipur
International Journal of Mobile Communications | Year: 2013

A number of mobile services providers are promoting their new product by leveraging upon customers' recognition of their existing product. However, the effectiveness of such leveraging is yet to be studied systematically, especially in an emerging mobile services context. The current study examines the factors that determine the effectiveness of cross-category promotions of mobile services. On the basis of the theory of brand extension, an adoption model which reflects customers' attitude shift from parent mobile product to the promoted new mobile product was developed and empirically tested against data collected from 545 China Mobile's mobile instant messenger users. Structural equation analysis results indicate that consumers' attitude towards parent mobile product influences their attitude towards the promoted new mobile product both directly as well as indirectly through perceived fit. Consumer trust also plays an important role in the process of customers' evaluation of cross-category promotions of new mobile services. Copyright © 2013 Inderscience Enterprises Ltd.

Kim H.-W.,Yonsei University | Gupta S.,Indian Institute of Management Raipur
IEEE Transactions on Engineering Management | Year: 2014

Information systems (IS) investments fail largely because a newly implemented system is not fully infused into its users' everyday life at work. IS infusion beyond an organization's mandated usage requires that users are actively motivated to use it and that they hold authority over usage of the system. Psychological empowerment represents one's motivational orientation, as well as one's authority to tap into a system's maximum potential. This empowerment is likely an important mechanism underlying successful IS infusion. The main objectives of this study are to: 1) understand the antecedents of empowerment; and 2) examine the effect of empowerment on IS infusion. We developed a theoretical model that was empirically tested through a field study, which focused upon individuals' use of a customer relationship management system. The results strongly support our theoretical model and reveal that the design of a work environment (i.e., IS, job, and social structure) affects the development of user empowerment. User empowerment in-turn plays a prominent role in regulating various aspects of IS infusion (i.e., extended use, integrative use, and emergent use). Overall, this paper contributes to postadoption research by introducing the concept of user empowerment and demonstrating its critical role in regulating IS infusion. It also helps managers promote user empowerment and eventually achieve IS infusion in organizations. © 2014 IEEE.

Pan Z.,Huazhong University of Science and Technology | Lu Y.,Huazhong University of Science and Technology | Gupta S.,Indian Institute of Management Raipur
Computers in Human Behavior | Year: 2014

Online communities that provide social media services need to engage newcomers so as to not lose them to competitors. This study examines the role of community diversity (in terms of perceived visible dissimilarity, perceived informational dissimilarity and perceived value dissimilarity) in influencing perceived inclusion of newcomers in the online community and the influence of such perception on newcomers' engagement intention. The theoretical background on perceived inclusion is obtained from the optimal distinctiveness theory, which comprises of two dimensions, namely, social identification and perceived uniqueness. The results support the multiple roles of community diversity on a newcomer's perceived inclusion. The findings of this study contribute to a better understanding of the effect of community diversity on newcomers' engagement behavior, and provide recommendations on designing a personalized community diversity environment. © 2014 Elsevier Ltd. All rights reserved.

Chattopadhyay M.,Indian Institute of Management Raipur | Sengupta S.,Indian Institute of Technology Bombay | Sahay B.S.,Indian Institute of Management Raipur
International Journal of Production Research | Year: 2015

The study identifies a need for efficient and robust visual clustering approach that can potentially deal with complex supply chain clustering problems. Based on the underlying philosophy of group technology, a growing hierarchical self-organising map algorithm (GHSOM) is proposed to identify a lower two-dimension visual clustering map that can effectively address supply chain clustering problems. The proposed approach provides optimal solutions by decomposing a large-sized supply chain problem into independent, small, manageable problems. It facilitates simple decision-making by exploring similar clusters that are represented by the neighbouring branches in the GHSOM map structure. Unlike other approaches in literature, the proposed approach can further attain good topological ordered representations of the various work order families, to be processed by clusters of supply units along with information on hierarchical sub-cell formation as identifiable from the visually navigable map. The proposed approach has been successfully applied on 16 benchmarked problems. The performance of GHSOM based on grouping efficacy measure outperformed the best results in literature. © 2015 Taylor & Francis

Pal D.,Indian Institute of Management Raipur | Mitra S.K.,Indian Institute of Management Raipur
Agricultural Economics (Czech Republic) | Year: 2015

The quantile autoregressive distributed lag model of Galvao et al. (2013) was employed to assess the impact of price realization on India's tea export. The results of the QADL varied signifi cantly from the conditional mean estimates. It was found that the tea export from India had autoregressive impact, and that production and export price realization had asymmetric relationship with India's tea export that varied over quantiles. © 2015, Agricultural Economics. All rights reserved.

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