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Article
Publication date: 10 June 2021

Golam Mortuja Sarkar, Suman Sarkar and Bikash Sahoo

This paper aims to theoretically and numerically investigate the steady two-dimensional (2D) Hiemenz flow with heat transfer of Reiner-Rivlin fluid over a linearly…

213

Abstract

Purpose

This paper aims to theoretically and numerically investigate the steady two-dimensional (2D) Hiemenz flow with heat transfer of Reiner-Rivlin fluid over a linearly stretching/shrinking sheet.

Design/methodology/approach

The Navier–Stokes equations are transformed into self-similar equations using appropriate similarity transformations and then solved numerically by using shooting technique. A simple but effective mathematical analysis has been used to prove the existence of a solution for stretching case (λ> 0). Moreover, an attempt has been laid to carry the asymptotic solution behavior for large stretching. The obtained asymptotic solutions are compared with direct numerical solutions, and the comparison is quite remarkable.

Findings

It is observed that the self-similar equations exhibit dual solutions within the range [λc, −1] of shrinking parameter λ, where λc is the turning point from where the dual solutions bifurcate. Unique solution is found for all stretching case (λ > 0). It is noticed that the effects of cross-viscous parameter L and shrinking parameter λ on velocity and thermal fields show opposite character in the dual solution branches. Thus, a linear temporal stability analysis is performed to determine the basic feasible solution. The stability analysis is based on the sign of the smallest eigenvalue, where positive or negative sign leading to a stable or unstable solution. The stability analysis reveals that the first solution is stable that describes the main flow. Increase in cross-viscous parameter L resulting in a significant increment in skin friction coefficient, local Nusselt number and dual solutions domain.

Originality/value

This work’s originality is to examine the combined effects of cross-viscous parameter and stretching/shrinking parameter on skin friction coefficient, local Nusselt number, velocity and temperature profiles of Hiemenz flow over a stretching/shrinking sheet. Although many studies on viscous fluid and nanofluid have been investigated in this field, there are still limited discoveries on non-Newtonian fluids. The obtained results can be used as a benchmark for future studies of higher-grade non-Newtonian flows with several physical aspects. All the generated results are claimed to be novel and have not been published elsewhere.

Details

World Journal of Engineering, vol. 19 no. 4
Type: Research Article
ISSN: 1708-5284

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Article
Publication date: 1 January 2025

Suman Das and Ambika Prasad Pati

The study aims to make a comparative assessment of the degree of market power for listed commercial banks operating in India and Bangladesh and identify various bank-specific…

15

Abstract

Purpose

The study aims to make a comparative assessment of the degree of market power for listed commercial banks operating in India and Bangladesh and identify various bank-specific market structures and macroeconomic determinants of market power.

Design/methodology/approach

The study relied on secondary data from 2011 to 2022 to assess the market power of 48 listed commercial banks in India and Bangladesh, employing the adjusted Lerner index (ALI) and the generalized method of moments (GMM) regression technique to explore the factors influencing market power.

Findings

The findings demonstrate that Indian banks possess more market power than their counterparts in Bangladesh and bank capitalization, diversification, operational inefficiency (OI) and gross domestic product (GDP) growth rate are crucial determinants of market power for both economies.

Research limitations/implications

The result provides significant takeaways for the respective country regulators and banks. The Reserve Bank of India (RBI) should implement measures to reduce market power. In contrast, the Bangladesh Bank (BB) should carefully monitor the increasing trend of competition and look into possibilities of bank consolidation without hampering the competitive agenda. Further, banks in both economies need to focus on operational cost-cutting.

Originality/value

This study is among the first to compare market power and its determinants for listed commercial banks of India and Bangladesh. It has also incorporated a new variable, technology, alongside other established determinants.

Details

South Asian Journal of Business Studies, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2398-628X

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Article
Publication date: 30 April 2024

Suman Das and Ambika Prasad Pati

This study aims to investigate whether various types of risks faced by the publicly listed commercial banks of India and Bangladesh are driven by market power and provides…

127

Abstract

Purpose

This study aims to investigate whether various types of risks faced by the publicly listed commercial banks of India and Bangladesh are driven by market power and provides comparative insights from both economies.

Design/methodology/approach

By using the adjusted Lerner index to gauge bank market power and applying the generalised methods of moments (GMM) regression approach, the research delved into the relationship between bank market power and three distinct facets of risk across a sample of 26 publicly listed commercial banks in India and 22 listed banks in Bangladesh spanning from 2011 to 2022.

Findings

The results indicate that for Bangladesh, both “competition fragility” and “competition stability” viewpoints coexist simultaneously across all risk types, supporting a nonlinear relationship between market power and risk. However, in the Indian context, a nonlinear association exists only in the case of credit risk, while the relationship with insolvency risk is linear, substantiating the “competition fragility view”. Apart from market power and bank-specific variables, GDP growth rate has emerged as a prominent driver across all risk categories in both countries.

Research limitations/implications

The filtration of banks is a limitation that might have influenced the outcomes. This study recommends that the Reserve Bank of India encourages further bank consolidation. Along the same line, Bangladesh Bank should closely oversee the growing competitive landscape. Furthermore, the regulators must monitor the elevated levels of non-performing loans to reduce credit risk so as to bolster the stability of their respective banking sectors.

Originality/value

This comparative study is the first attempt to analyse the market power and risk relationship and includes a novel bank-specific variable, i.e. technology, apart from other established variables.

Details

Journal of Financial Regulation and Compliance, vol. 32 no. 4
Type: Research Article
ISSN: 1358-1988

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Article
Publication date: 4 July 2020

Bipin Kumar Dixit, Nilesh Gupta and Suman Saurabh

The purpose of this paper is to examine the dividend payout behavior of Indian firms and test whether the three prominent dividend policy theories (signaling, life-cycle and…

833

Abstract

Purpose

The purpose of this paper is to examine the dividend payout behavior of Indian firms and test whether the three prominent dividend policy theories (signaling, life-cycle and catering) explain the dividend policy of Indian firms.

Design/methodology/approach

The authors test the three theories using the methodology based on the studies of Nissim and Ziv (2001), DeAngelo et al. (2006) and Baker and Wurgler (2004). For testing the signaling theory, the authors regress the change in earnings on the rate of change in dividends using the pooled and Fama–Macbeth regressions. The life cycle theory is tested by running a logistic regression of the dividend payment decision on two proxies of life-cycle measured by the ratio of earned to total equity. Finally, the catering theory tests the relationship between the decision to pay a dividend and the dividend premium.

Findings

The results based on a sample of Indian firms from 1992 to 2017 show that the dividend policy of Indian firms can be explained using the life-cycle theory. However, there is no evidence in support of the signaling and catering theories.

Originality/value

It provides insights into the dividend policy of Indian firms. Though there have been a few studies examining the dividend payout in India, none of the existing studies tests these theories of dividend payout. The existing research using the Indian data provides indirect evidence about the life-cycle theory. This study is the first one to test the application of these theories for Indian firms.

Details

Managerial Finance, vol. 46 no. 11
Type: Research Article
ISSN: 0307-4358

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Book part
Publication date: 16 July 2018

Arup Kumar Sarkar and Tarak Nath Sahu

Abstract

Details

Investment Behaviour
Type: Book
ISBN: 978-1-78756-280-6

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Article
Publication date: 20 May 2024

Anjali Sain and Smita Kashiramka

This paper aims to investigate the impact of corporate governance mechanisms and the environmental, social and governance (ESG) disclosure score on bank performance and financial…

443

Abstract

Purpose

This paper aims to investigate the impact of corporate governance mechanisms and the environmental, social and governance (ESG) disclosure score on bank performance and financial stability. Further, this paper analyses how this relationship varies over the different ownership structures.

Design/methodology/approach

The paper uses a sample of 41 Indian banks (including both public sector and private sector banks) over the period ranging from 2008 to 2020. The data is analyzed in both static and dynamic frameworks using panel regression and system generalized methods of moments.

Findings

The results indicate that the frequency of board meetings has a negative influence on the performance of the banks. Gender diversity reveals both linear and non-linear relationships with bank performance. In the sample of public sector banks, the board size and promoters’ ownership have a significant negative effect on the bank's performance. In private sector banks, CEO duality adversely affects performance. Further, the results indicate that ESG disclosure score is positively linked with the profitability of banks.

Originality/value

This paper provides a comprehensive analysis of the impact of corporate governance mechanisms and ESG disclosure scores on bank performance and stability in the context of the Indian economy. To the best of the authors’ knowledge, there has been no empirical investigation or study that has been conducted in this respect.

Details

Journal of Advances in Management Research, vol. 21 no. 4
Type: Research Article
ISSN: 0972-7981

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Book part
Publication date: 22 August 2022

Gunjan Saxena

This chapter challenges the urban bias in studies on the middle class in India and underlines the need to focus on the significant role rural middle class plays in economic…

Abstract

This chapter challenges the urban bias in studies on the middle class in India and underlines the need to focus on the significant role rural middle class plays in economic diversification. Given that more than 23% of the upper middle class are located in rural India, it is surprising to note that their contribution in supporting experience economy remains under-researched. Thus, this chapter fills a key gap in existing studies on rural tourism in India by underlining how rural middle-class has triggered a huge demand for travel within the country itself for rural cultural programmes and different schemes to promote rural heritage sights.

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Book part
Publication date: 22 August 2022

Anil Padhra

In the wake of the COVID-19 pandemic, India's tourism industry has the opportunity to further grow and expand through the development and implementation of sustainable policies…

Abstract

In the wake of the COVID-19 pandemic, India's tourism industry has the opportunity to further grow and expand through the development and implementation of sustainable policies. The diversity of India's geography is observed in its weather which is variable both spatially and temporally throughout the year. Seasonal changes in weather influence the number of foreign tourists arrivals in India. Consequently, significant reductions in visitor numbers are observed during the monsoon season. In future decades, the changing climate has the potential to shape tourism patterns. Warmer temperatures and an increased frequency of high-intensity rainfall are the two most common predictions concerning future climate in India. It will result in a shorter winter tourism season in the northern states where the cold weather enables winter sports activities such as skiing and snowboarding. Coastal tourism along India's stretched coastline may become less attractive to tourists due to damage and disruption to coral reefs and marine wildlife. Sea-level rise and coastal erosion may push beach tourists to more desirable and scenic destinations. India's transport infrastructure is key to enabling the safe and efficient movement of tourists around the country. The current weather is already impacting the air, road and rail networks and, further challenges are highly likely due to a changing climate. There is still an opportunity for India's tourism industry to adapt through physical and policy developments. It would make India a more competitive and sustainable tourism destination.

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Article
Publication date: 19 November 2024

Suman Das and Ambika Prasad Pati

Over the past three decades, financial deregulation and various reforms have significantly transformed the competitive environment for banks in Indonesia. These changes have…

19

Abstract

Purpose

Over the past three decades, financial deregulation and various reforms have significantly transformed the competitive environment for banks in Indonesia. These changes have introduced new challenges for banks to retain their market power and ensure their survival. In light of this, the article aims to assess the current levels of market power held by Indonesian banks and explore the factors that influence it.

Design/methodology/approach

The paper measured the degree of market power and identified its impacting factors for 22 listed commercial banks using the Adjusted Lerner Index (ALI) and appropriate regression technique over a period of 2011–2023.

Findings

The empirical findings reveal that banks in Indonesia enjoy high market power, and factors such as capitalization, diversification, operational inefficiency, asset quality and GDP growth rate significantly impact banks’ market power. Additionally, the findings contradict the structure-conduct-performance paradigm, which advocates that a concentrated banking system impairs competition.

Research limitations/implications

The study suggests that regulatory authorities should closely monitor the market power levels and promote strategies to enhance competition within the banking sector. Additionally, banks should prioritize implementing measures to reduce operational costs and improve the quality of assets.

Originality/value

This research represents one of the early attempts to gauge the market power of publicly listed conventional commercial banks in Indonesia by employing the Adjusted Lerner Index. Additionally, it introduces “technology adoption” as a novel variable to the analysis alongside other established variables.

Details

Journal of Economic and Administrative Sciences, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2054-6238

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Book part
Publication date: 28 February 2025

Chipo Katsande, Tendai Shelton Muwani, Gracious Mutipforo, Prosper Tafadzwa Denhere, Njodzi Ranganai, Solomon Marime and Allan C. Muzenda

Universal Health Coverage (UHC) means that all people can access quality essential health services, without having to suffer financial hardship. However, this remains a…

Abstract

Universal Health Coverage (UHC) means that all people can access quality essential health services, without having to suffer financial hardship. However, this remains a significant challenge in many parts of Africa, particularly for marginalized populations in hard-to-reach communities as the financial burden continues to be placed on the poor citizens. The rapid advancement of digital technologies has changed the healthcare landscape by introducing new, frugal methods for healthcare delivery, holding the potential to bridge the healthcare gap and enhance access to quality healthcare for marginalized populations. While the notion of frugal innovation (FI) is gaining worldwide traction, the application of digital technologies in driving FIs within African healthcare systems remains largely untapped. With this aim, the research conducted a comprehensive literature review and searched for articles that addressed digital technologies in the medical field and technology-enabled disruptive digital frugal innovations (DFIs), particularly in the healthcare sector in Africa from Scopus indexed journals. In addition, the technologies identified are examined with respect to their innovation characteristics. Inclusion and exclusion criterion were clearly defined. The inclusion criteria considered studies that explored digital technologies and their intervention characteristics and DFIs in healthcare. Articles that were excluded from the study consisted of those not written in English, studies that addressed broader aspects of technology without specific emphasis on DFIs in healthcare.

Details

Disruptive Frugal Digital Innovation in Africa
Type: Book
ISBN: 978-1-83549-568-1

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