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Article
Publication date: 1 May 2006

Manjeet Jassal, Ashwini K. Agrawal, Arnab K. Ghosh, K.R.T. Ramasubramani and Anasuya Sahoo

Polymeric fibres that have a unique capability to change their structure in response to small environmental changes such as pH, electrolyte and electric field are an attractive…

32

Abstract

Polymeric fibres that have a unique capability to change their structure in response to small environmental changes such as pH, electrolyte and electric field are an attractive alternative for artificial muscles. Stimuli sensitive fibres were prepared by the modification of commercial polyacrylonitrile (PAN) fibres. The modification was carried out in two steps: thermo-oxidation and hydrolysis. During the thermo-oxidation step, the crosslinks imparted through the pendant nitrile groups provided a stable structure. While in the subsequent saponification step, the uncrosslinked nitrile groups were converted to responsive carboxylic acid groups. The effect of stabilization parameters and saponification conditions on the structure, properties and swelling behaviour of these fibres was investigated. The fibres showed muscle like expanding and contracting behaviour stimulated by changes in pH of the environment.

Details

Research Journal of Textile and Apparel, vol. 10 no. 2
Type: Research Article
ISSN: 1560-6074

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Article
Publication date: 26 July 2021

Vikash Gurugubelli and Arnab Ghosh

The share of renewable energy sources (RESs) in the power system is increasing day by day. The RESs are intermittent, therefore maintaining the grid stability and power balance is…

300

Abstract

Purpose

The share of renewable energy sources (RESs) in the power system is increasing day by day. The RESs are intermittent, therefore maintaining the grid stability and power balance is very difficult. The purpose of this paper is to control the inverters in microgrid using different control strategies to maintain the system stability and power balance.

Design/methodology/approach

In this paper, different control strategies are implemented to the voltage source converter (VSC) to get the desired performance. The DQ control is a basic control strategy that is inherently present in the droop and virtual synchronous machine (VSM) control strategies. The droop and VSM control strategies are inspired by the conventional synchronous machine (SM). The main objective of this work is to design and implement the three aforementioned control strategies in microgrid.

Findings

The significant contributions of this work are: the detailed implementation of DQ control, droop control and VSM control strategies for VSC in both grid-connected mode and standalone mode is presented; the MATLAB/Simulink simulation results and comparative studies of the three aforementioned controllers are introduced first time in the proposed work; and the opal-RT digital real-time simulation results of the proposed VSM control show the superiority in transient response compared to the droop control strategy.

Research limitations/implications

In the power system, the power electronic-based power allowed by VSM is dominated by the conventional power which is generated from the traditional SM, and then the issues related to stability still need advance study. There are some differences between the SM and VSM characteristics, so the integration of VSM with the existing system still needs further study. Economical operation of VSM with hybrid storage is also one of the future scopes of this work.

Originality/value

The significant contributions of this work are: the detailed implementation of DQ control, droop control and VSM control strategies for VSC in both grid-connected mode and standalone mode is presented; the MATLAB/Simulink simulation results and comparative studies of the three aforementioned controllers are introduced first time in the proposed work; and the opal-RT digital real-time simulation results of the proposed VSM control show the superiority in transient response compared to the droop control strategy.

Details

World Journal of Engineering, vol. 19 no. 5
Type: Research Article
ISSN: 1708-5284

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Article
Publication date: 9 March 2021

Arnab Adhikari, Samadrita Bhattacharyya, Sumanta Basu and Rajesh Bhattacharya

In the context of India, this article proposes an integrated multicriteria decision-making (MCDM) regression-based methodology to evaluate input-level performance of the schools…

488

Abstract

Purpose

In the context of India, this article proposes an integrated multicriteria decision-making (MCDM) regression-based methodology to evaluate input-level performance of the schools and investigate the impact of this performance along with contextual factors, i.e. medium of instruction and location of the school, on the school's output level performance, i.e. student pass rate.

Design/methodology/approach

First, Shannon entropy-based approach is applied for the weight assignment to different parameters. Then, integrated VlseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR) technique for order preference by similarity to an ideal solution (TOPSIS)-based methodology is devised to measure the input-level performance of a school. Finally, multiple linear regression (MLR) analysis is incorporated to study the effect of input-level performance and above-mentioned contextual factors on the school's output-level performance.

Findings

Proposed methodology is applied to assess the input-level performance of 82,930 primary and secondary schools of West Bengal, India. All the factors have a significant impact on boys' pass rate, whereas only input-level performance and location of the school have a significant influence on the girls' pass rate.

Practical implications

The entropy-based approach highlights the importance of scientific weight assignment. Integrated MCDM demonstrates the significance of aggregation due to the variation in scores related to input-level performance across the methods. Regression analysis facilitates the exploration of determinants influencing the output-level performance of the schools.

Originality/value

This work depicts a holistic picture of the performance measurement system of the schools. It encompasses scientific weight assignment to the evaluation criteria, integrated input-level performance assessment of the schools and investigation into the effect of this performance, as well as other contextual factors on the output level performance.

Details

International Journal of Productivity and Performance Management, vol. 71 no. 7
Type: Research Article
ISSN: 1741-0401

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Article
Publication date: 1 October 2019

Arnab Bhattacharya and Pradip Banerjee

This paper aims to examine various factors affecting the pricing of audit services and the selection of auditors in the Indian audit market. This paper also aims to investigate…

1139

Abstract

Purpose

This paper aims to examine various factors affecting the pricing of audit services and the selection of auditors in the Indian audit market. This paper also aims to investigate the impact of financial distress conditions on the audit pricing and auditor choice decisions of a firm, particularly in the context of a developing economy.

Design/methodology/approach

The sample comprises 22,644 firm-years for 1,366 Indian firms from 1990 to 2015. The authors adopt ordinary least squares regression technique to model audit fee, and logistic regression technique to model auditor choice as a function of various factors relating to firm attributes and auditor characteristics.

Findings

This paper finds that auditors tend to charge an audit fee premium when they are affiliated to a Big 4 auditor, have industry specialization or jointly provide auditing and non-auditing services. Additionally, firms with larger boards, higher proportion of independent board of directors and CEO–Chairman separation are more likely to choose a Big 4-affiliated auditor. The results also suggest that financially distressed firms tend to pay significantly lower audit fees and are more likely to choose non-Big 4 auditors.

Originality/value

This paper is among the few studies which investigate how financial distress impacts the audit pricing and auditor choice decisions of a firm in the context of emerging economies. The findings of this paper raises serious concerns about the credibility of the audited financial statements and corporate governance mechanisms of firms undergoing financial distress. The empirical results of this paper have strong implications for practitioners, regulators and investors.

Details

Managerial Auditing Journal, vol. 35 no. 1
Type: Research Article
ISSN: 0268-6902

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Article
Publication date: 9 March 2023

Sunil Nandankar, Amit Sachan, Arnab Adhikari and Arindam Mukherjee

The research aims to qualitatively explore e-marketplace service quality (EMSQ) from the perspective of an industrial buyer as a sole decision-maker. It further intends to…

1385

Abstract

Purpose

The research aims to qualitatively explore e-marketplace service quality (EMSQ) from the perspective of an industrial buyer as a sole decision-maker. It further intends to quantitatively examine its impact on the industrial buyer's perceived value (PV), overall satisfaction (SAT), and e-loyalty (ELOY) in the context of business-to-government (B2G) e-commerce.

Design/methodology/approach

The research used an exploratory sequential mixed-method design. A qualitative exploratory study of EMSQ was conducted using a Straussian grounded theory (GT) technique, followed by an explanatory quantitative study using PLS-SEM to evaluate causal links between various research variables.

Findings

In the area of e-services, the investigation found that the hierarchical structure of EMSQ encompasses six broadly applicable dimensions and one B2G context-specific dimension of the e-governance process quality. The study also reinforced previous research findings in the B2C and B2B e-commerce domains, highlighting that e-service quality positively impacts online buyer's PV, SAT and ELOY.

Research limitations/implications

This research contributed to the area of e-service operations by developing and validating the EMSQ model in the B2G e-commerce settings. Further, it has opened up new research avenues in B2G e-commerce.

Practical implications

The findings from this research highlighted that e-service operations managers should focus on usability, technological concerns, product/vendor quality concerns, customer support reliability, along with effective e-governance, ordering and logistics processes for e-business success. It also provides policymakers with guidelines for making B2G e-marketplaces sustainable.

Originality/value

To the best of the author's knowledge, this is the first study employing the GT and PLS-SEM techniques to explore EMSQ from the viewpoint of industrial buyers in B2G e-commerce. The study contributed to prior literature by proposing and validating the hierarchical EMSQ model.

Details

International Journal of Operations & Production Management, vol. 43 no. 12
Type: Research Article
ISSN: 0144-3577

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Article
Publication date: 30 April 2020

Kalpana Tokas and Arnab Kumar Deb

The paper is in the area of international business and international trade. Specifically, this paper aims to focus on cross-border trade flows of goods and services between India…

7449

Abstract

Purpose

The paper is in the area of international business and international trade. Specifically, this paper aims to focus on cross-border trade flows of goods and services between India and its partner nations.

Design/methodology/approach

Using the Cultural, Administrative, Geographic and Economic (CAGE) distance framework (Ghemawat, 2001), this paper provides empirical support for the impact these distance factors exert on the volume of trade in goods and services between countries. The sample used for empirical analysis consists of a set of 62 OECD countries which are involved in trade in goods and services with India over the period 2005 through 2015. This paper estimates a fixed-effects model to provide a comprehensive examination of all the distance factors impacting the bilateral cross-border trade flows of India.

Findings

The empirical findings in this paper show that different dimensions of the CAGE distances have varied influence on volume of trade flows between India and its trading partners. Also, the extent of this influence is guided by the nature of industries – manufacturing or services.

Originality/value

Departing from the common practice in the literature, using the trade flow data for both Indian manufacturing and service sectors separately, this paper examines to what extent is the impact of these distance factors industry driven.

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Article
Publication date: 16 April 2024

Arnab Kumar Das and Pooja Malik

This study aims to identify specific factors that facilitate engagement and stay intention among Generation Z employees in the Indian banking, financial services and insurance…

682

Abstract

Purpose

This study aims to identify specific factors that facilitate engagement and stay intention among Generation Z employees in the Indian banking, financial services and insurance (BFSI) context. Furthermore, using the frequency distribution of the identified factors, this study has ranked them in order of their association with stay intention.

Design/methodology/approach

Data were collected from 22 Gen Z employees working in the Indian private BFSI sector using unstructured interviews. Inductive content analysis was applied to identify the factors improving engagement and stay intention. Moreover, quantitative content analysis was applied to calculate the frequency distribution of the identified factors.

Findings

The study identified six prominent factors, namely, transformational leadership, employee investment practices, egalitarian practices, work-life balance, job crafting and sustainability, which significantly enhance employee engagement and stay intention among Gen Z employees. Moreover, based on the results of quantitative content analysis, it was found that transformational leadership exhibited the highest frequency in association with employee engagement and stay intention. Following this were employee involvement, egalitarian practices, work-life balance, job crafting and sustainability.

Research limitations/implications

In the coming days, Generation Z will contribute to almost one-third of India’s workforce, of which the BFSI sector will be the major employer. However, the issue with this generation is their retention. Hence, the study identifies factors ensuring engagement and stay intention.

Originality/value

Owing to the paucity of research on stay intention as a variable of interest, this study tries to capture the perceptions of Gen Z towards factors inducing their engagement and stay intention. This study assesses intention to stay (ITS) as compared to intention to leave (ITL) as it is a proactive indicator of turnover. Lastly, this study uses a qualitative approach to identify factors influencing stay intention and engagement based on interactions with employees, which, to the best of the authors’ knowledge, no prior study has attempted.

Details

International Journal of Organizational Analysis, vol. 33 no. 1
Type: Research Article
ISSN: 1934-8835

Keywords

Available. Open Access. Open Access
Article
Publication date: 3 January 2022

Avik Sinha, Arnab Adhikari and Ashish Kumar Jha

This study aims to analyze the socio-ecological policy trade-off caused by technological innovations in the post-COVID-19 era. The study outcomes are utilized to design a…

1769

Abstract

Purpose

This study aims to analyze the socio-ecological policy trade-off caused by technological innovations in the post-COVID-19 era. The study outcomes are utilized to design a comprehensive policy framework for attaining sustainable development goals (SDGs).

Design/methodology/approach

Study is done for 100 countries over 1991–2019. Second-generation estimation method is used. Innovation is measured by total factor productivity, environmental quality is measured by carbon dioxide (CO2) emissions and social dimension is captured by unemployment.

Findings

Innovation–CO2 emissions association is found to be inverted U-shaped and innovation–unemployment association is found to be U-shaped.

Research limitations/implications

The study outcomes show the conflicting impact of technological innovation leading to policy trade-off. This dual impact of innovation is considered during policy recommendation.

Practical implications

The policy framework recommended in the study shows a way to address the objectives of SDG 8, 9 and 13 during post-COVID-19 period.

Social implications

Policy recommendations in the study show a way to internalize the negative social externality exerted by innovation.

Originality/value

This study contributes to the literature by considering the policy trade-off caused by innovation and recommending an SDG-oriented policy framework for the post-COVID-19 era.

Details

Journal of Enterprise Information Management, vol. 35 no. 1
Type: Research Article
ISSN: 1741-0398

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Article
Publication date: 6 March 2023

Ajit Pal Singh and Nardos Fentaw Awoke

The purpose of this paper is to investigate the relationship between total productive maintenance (TPM) practices and operational performance (OP) in soft drinks manufacturing…

1118

Abstract

Purpose

The purpose of this paper is to investigate the relationship between total productive maintenance (TPM) practices and operational performance (OP) in soft drinks manufacturing industry, Ethiopia.

Design/methodology/approach

In this study acceptability and implementation of five TPM practices (i.e., dependent factors: autonomous maintenance (AUT); safety, health and environment (SHE); education and training (EDT); focused improvement; and planned maintenance (PLM)) in soft drinks manufacturing industry have been elaborated to ascertain the benefits accrued as a result of successful TPM practices (i.e., independent variables) on OP (i.e., dependent variables). A self-administered survey seven-point Likert scale questionnaire was used for primary data collection. By using simple random sampling technique a total of 100 useable responses resulted in a 66.66 per cent response rate. Descriptive (mean, standard deviation) and inferential statistics (factor analysis, correlation, simple and multiple regression analysis) analysis were performed using Statistical Package for Social Sciences (SPSS) software (version-28) to identify the relationship and effect of TPM practices on OP. Five hypotheses were developed and tested.

Findings

Results show that four of the TPM practices were positively and significantly correlated with OP. Aggregate TPM shows positive and significant correlation with OP. Four hypotheses results revealed that the AUT; SHE; EDT and PLM practices have positive and significant relationship with OP and significantly improve OP. The results also show that the TPM practices have positive and significant relationship with OP and significantly improve cost effectiveness, product quality, on-time delivery and volume flexibility.

Practical implications

The benefits gained by TPM practices in selected soft drinks manufacturing industry have been highlighted, that could be genuine source of motivation to other companies to go in for TPM program. This research contributes to the literature by examining the contingency of various TPM enabling factors in the context of the Ethiopian soft drinks manufacturing sector, and it, therefore, provides direction to increase the success rate of TPM implementation. Study offers academics and practitioners a better understanding of the relationship and effect of the TPM practices on the OPs. Thus, practitioners will be able to make better and more effective decisions about the implementation of TPM practices for better OP results.

Originality/value

The relationship between the five factors TPM practices and OP has not yet been studied or reported in the case of soft drink manufacturing industry. The questionnaire manner and items developed, factor considered in this study, sampling method, deeply statistical data analysis techniques used, soft drink manufacturing industry, developing country like Ethiopia make this study unique and revealed the gap identification in this area. The study has contributed to the TPM literature with a better understanding of the five TPM practices and their association with a soft drink manufacturing industry OP that will provide valuable knowledge to top-management of manufacturing companies, to refine their current TPM practices and subsequently improve OP.

Details

Journal of Quality in Maintenance Engineering, vol. 29 no. 4
Type: Research Article
ISSN: 1355-2511

Keywords

Available. Content available
Book part
Publication date: 17 May 2024

Free Access. Free Access

Abstract

Details

International Trade, Economic Crisis and the Sustainable Development Goals
Type: Book
ISBN: 978-1-83753-587-3

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