Faculty Publications
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Item Distributed Access Control in Cloud Computing Systems(wiley, 2016) Chandrasekaran, K.; Thomas, M.V.With the tremendous increase in the number of distributed applications, the issue of distributed access control has become an important research topic for both academia and industry. In distributed computing environments like cloud computing or service computing, authentication and authorization are the two important functions to be performed, to make sure that unauthorized users do not access distributed system components. An effective access control mechanism is an essential security component as far as protecting the confidentiality, integrity, and availability (CIA) of information hosted in the cloud is concerned. An effective access control mechanism implemented in the cloud domain should be scalable, reliable, and robust and it should provide required features and procedures for identity provisioning, deprovisioning, authentication, authorization, accounting, and auditing. In this chapter, we discuss the issue of distributed access control, major features and functionalities, access control policies and models, distributed access control architecture for multicloud environments, trust, and identity management in cloud computing environments. Related work shows some of the major research activities in the area of distributed access control considering the advantages and disadvantages of the approaches that have been adopted. We conclude this chapter by discussing a few research issues in the area of distributed access control in the cloud environment. © 2016 John Wiley & Sons, Ltd.Item He Said, She Said: Understanding Gender Variances in Factors Influencing Cognitive Dissonance in Online Shopping of Electronic Products(Emerald Publishing, 2025) Haritha, S.; Mohan, B.C.This study investigates the factors influencing cognitive dissonance in the context of consumer behavior within the electronic product category. A comprehensive literature review was conducted to identify key factors associated with cognitive dissonance, including trust, choice difficulty, and perceived risks. The primary objective of this research was to assess whether these factors differ based on gender. To achieve this, an analysis of variance (ANOVA) was employed to examine the influence of gender on each of the identified factors. Contrary to expectations, the results revealed that none of the factors -trust, choice difficulty, or perceived risks -varied significantly between male and female participants. This finding suggests that gender may not play a pivotal role in shaping cognitive dissonance in this particular product category. The study contributes to a deeper understanding of cognitive dissonance by reinforcing the importance of trust, choice difficulty, and perceived risks as influential factors, while highlighting the lack of gender-based differences in these influences. The results provide valuable insights for marketers and consumer behavior researchers aiming to tailor strategies that reduce cognitive dissonance in electronic product purchases. Further research is recommended to explore other potential variables influencing cognitive dissonance across different product categories and consumer demographics. © 2026 Dhishna Pannikot. All rights reserved.Item Privacy and trust in cloud database using threshold-based secret sharing(2013) Dutta, R.; Annappa, B.In today's cloud computing scenario, privacy of data and trust on the service provider have become a major issue and concern. Achieving trust and preserving the privacy of data stored in third-party cloud databases has emerged as a key research area. To achieve this, several different techniques have been proposed based on cryptography, auditing by a third party, etc. Secret sharing schemes have also been considered to address these issues of trust and privacy in databases by various researchers. In this paper, we propose a technique of using a well-known threshold-based visual secret sharing scheme to address the issue of privacy and trust in cloud databases and database-as-a-service offerings. We consider data records with at least one prime attribute and propose an indexing technique for the secret shares of records in a large database based on some properties of the secret sharing technique. Our technique is aimed at minimizing storage overhead of secret shares as well as high speed upload and retrieval of data. We discuss the results obtained from our implementation. Our implementation using Hadoop Distributed File System (HDFS) with Matlab shows that this technique minimizes storage overhead due to secret shares and ensures high speed data upload and retrieval. © 2013 IEEE.Item An efficient game-theoretic approach for resource management in Cloud Federation(Institute of Electrical and Electronics Engineers Inc., 2016) Thakur, P.K.; Thomas, M.V.; Chandrasekaran, K.Cloud Federation is an emerging technology for the effective utilization of cloud resources. Effective management of resources is very much required in order to increase the profits of individual CSPs in the federation. Hence, it is of crucial business value for a cloud provider to develop an effective mechanism so that the resource management is efficient in the cloud federation scope. In this paper, we discuss the design and development of game-theoretic approach for the resource management mechanism also considering the trust values between the participating CSPs in the federation. We have discussed and analysed the performance of both the co-operative and non co-operative approaches for the resource allocation. © 2015 IEEE.Item An efficient trust-based Game-Theoretic approach for Cloud Federation Formation(Institute of Electrical and Electronics Engineers Inc., 2016) Dhole, A.; Thomas, M.V.; Chandrasekaran, K.Cloud Federation or a Coalition of Cloud Service Providers (CSPs) is a hot topic nowadays in the industry as well as academia. Cloud Federation was introduced to overcome the realistic limited amount of resources available from a single CSP so that the CSPs may not lose its customers due to the unavailability of resources. But its a challenge to form a Cloud Federation which is stable, reliable and fair in terms of payoff to the CSPs that are part of the Cloud Federation. In this paper, we propose to find a solution to the Cloud Federation formation by following a game-theoretic approach considering the trust between the participating CSPs. This technique will also allow the CSPs to take decision unilaterally based on their own decisions depending on the profit they would receive upon inclusion into the federation. Our approach takes into consideration the trust between the CSPs taking part in the Cloud Federation Formation process. The Game-Theoretic approach used in our approach makes use of a simple Cloud Federation Formation policy which ensures stability and fairness in the Cloud Federation. © 2016 IEEE.Item Influence of Trust and Participation in Decision Making on Employee Attitudes in Indian Public Sector Undertakings(SAGE Publications Inc. claims@sagepub.com, 2017) Kumar, S.P.; Saha, S.Trust is an important component that needs to be present among individuals. Survey data from 712 managerial employees from public sector undertakings were used to examine the effects of trust and participation in decision making on attitudinal outcomes. Results indicate that trust is significantly related to job satisfaction, group commitment, and affective commitment. Participation in decision making is a predictor of job satisfaction and affective commitment, but it did not predict group commitment. Job satisfaction significantly influences group commitment and affective commitment. Group commitment predicts affective commitment and acts as a mediator between job satisfaction and affective commitment. These findings suggest that managers need to facilitate trust and active participation among employees by taking their opinions on different work aspects. Organizations that allow employees’ participation in decision making and are perceived as trustworthy have employees who exhibit more attachment and identification with their organization. © 2017, © The Author(s) 2017.Item Dynamic partner selection in Cloud Federation for ensuring the quality of service for cloud consumers(World Scientific Publishing Co. Pte Ltd wspc@wspc.com.sg, 2017) Thomas, M.V.; Chandrasekaran, K.Cloud Computing has become the popular paradigm for accessing the various scalable and on-demand computing services over the internet. Nowadays, individual Cloud Service Providers (CSPs) offering specialized services to the customers collaborate to form the Cloud Federation, in order to reap the real benefits of Cloud Computing. By collaboration, the member CSPs of the federation achieve better resource utilization and Quality of Service (QoS), thereby increasing their business prospects. When a CSP runs out of resources in the Cloud Federation, in order to offload the customer requests for resources to other CSP(s), identifying a suitable partner is a challenging task due to the lack of global coordination among them. In this paper, we propose the design and implementation of an efficient partner selection mechanism in the Cloud Federation, using the Analytic Hierarchy Process (AHP) and the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) methods, and also considering the trust values of various CSPs in the federation. The AHP method is used to calculate the weights of the QoS parameters used in the TOPSIS method which is used to rank the various CSPs in the Cloud Federation according to the user requirements. Simulation results show the effectiveness of this approach in order to efficiently select the trustworthy partners in large scale federations to ensure the required QoS to the cloud consumers. © 2017 World Scientific Publishing Company.Item Impact of COVID-19 on individuals’ mental health and preventive health behaviours: a conceptual framework(Inderscience Publishers, 2022) Pai, R.R.; Chetty, N.; Alathur, S.The corona virus disease (COVID-19) is a pandemic that facilitate a confrontation space for scientific and social existence of human frontiers. The rapid spread and mortality rate of COVID-19 and the preventive measures including social distancing and its impact on economy, developed an unprecedented consciousness around the globe. It has created an effect on the mental health of individuals employed across various sectors and is outlined in this study. There is currently an inadequate theoretical model that focuses on the comprehensive understanding of the psychology of preventive behaviour during the outbreak of pandemics. In this study, a transnational model is delineated for assessing the adoption of preventive behavioural practices associated with COVID-19 pandemic. It uses the components derived from the theories of situational awareness and health belief model and literatures related to impact of containment strategies on various sectors. The contribution includes policy recommendations that can be helpful for the healthcare professionals and government to control the disease spread. © © 2022 Inderscience Enterprises Ltd.