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Article
Publication date: 1 June 2023

Satish Kumar, Arun Gupta, Anish Kumar, Pankaj Chandna and Gian Bhushan

Milling is a flexible creation process for the manufacturing of dies and aeronautical parts. While machining thin-walled parts, heat generation during machining essentially…

Abstract

Purpose

Milling is a flexible creation process for the manufacturing of dies and aeronautical parts. While machining thin-walled parts, heat generation during machining essentially affects the accuracy. The workpiece temperature (WT), as well as the responses like material removal rate (MRR) and surface roughness (SR) for input parameters like cutting speed (CS), feed rate (F), depth-of-cut (DOC), step over (SO) and tool diameter (TD), becomes critical for sustaining the accuracy of the thin walls.

Design/methodology/approach

Response surface methodology was used to make 46 tests. To convert the multi-character problem into a single-character problem, the weightage was assessed using the entropy approach and the grey relational coefficient (GRC) was determined. To investigate the connection among input parameters and single-objective (GRC), a fuzzy mathematical modelling technique was used. The optimal performance of process parameters was estimated by grey relational entropy grade (GREG)-fuzzy and genetic algorithm (GA) optimization.

Findings

SR was found to be a significant process parameter, with CS, feed and DOC, respectively. Similarly, F, DOC and TD were found to be significant process parameters with MRR, respectively, and F, DOC, SO and TD were found to be significant process parameters with WT, respectively. GREG-fuzzy-GA found more suitable for minimizing the WT with the constraint s of SR and MRR and provide maximum desirability of 0.665. The projected and experimental values have a good agreement, with a standard error of 5.85%, and so the responses predicted by the suggested method are better optimized.

Originality/value

The GREG-fuzzy-GA is a new hybrid technique for analysing Inconel625 behaviour during machining in a 2.5D milling process.

Details

World Journal of Engineering, vol. 21 no. 3
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 12 June 2017

Firoozeh Pourjavaheri, Farzad Mohades, Oliver Jones, Frank Sherkat, Ing Kong, Arun Gupta and Robert A. Shanks

This paper aims to use the solvent–casting–evaporation method to prepare new bio-composites with thermoplastic poly(ether urethane) (TPU-polyether) as the polymer matrix and…

Abstract

Purpose

This paper aims to use the solvent–casting–evaporation method to prepare new bio-composites with thermoplastic poly(ether urethane) (TPU-polyether) as the polymer matrix and reinforced with natural chicken feather fibre (CFF).

Design/methodology/approach

To produce the bio-composites, 0 to 60 per cent·w/w of fibres in steps of 30 per cent·w/w were added to the polymer matrix. The uniformity of distribution of the keratin fibres in the polymer matrix was investigated via scanning electron microscopy, and the results suggested compatibility of the TPU-polyether matrix with the CFFs, thereby implying effective fibre–polymer interactions.

Findings

Addition of natural fibres to the polymer was found to decrease the mass loss of the composites at higher temperatures and decrease the glass transition temperature, as well as the storage and loss modulus, at lower temperatures, while increasing the remaining char ratio, storage modulus and loss modulus at higher temperatures.

Originality/value

The investigation confirmed that waste keratin CFF can improve the thermo-mechanical properties of composites, simply and cheaply, with potentially large environmental and economic benefits.

Details

World Journal of Engineering, vol. 14 no. 3
Type: Research Article
ISSN: 1708-5284

Keywords

Case study
Publication date: 2 January 2020

Arun Bhattacharyya, Sangeeth Varghese and Amit Gupta

Learning outcomes are as follows: understanding the importance of aligning an entrepreneur’s personal orientation and values (e.g. detachment from the enterprise) with business…

Abstract

Learning outcomes

Learning outcomes are as follows: understanding the importance of aligning an entrepreneur’s personal orientation and values (e.g. detachment from the enterprise) with business decisions related to enterprise development; appreciating how prior exposure to business settings can be a source of entrepreneurship pursuits for an entrepreneur; and understand whether a different type of leadership can be instrumental in the creation, running and growth of an entrepreneurial venture, especially in terms of introducing differentiated offerings in the target market.

Case overview/synopsis

The case is about an entrepreneur, Sangeeth Varghese, with a very humble and conservative background, who worked in various firms, small and large, and become a young global leader at World Economic Forum, before foraying into entrepreneurship. He is driven by the core values of detachment and democratization, which is reflected throughout his life course and has developed his own views on leadership. After running his first venture LeadCap Ventures with some measure of success, Sangeeth is about to launch his new venture LeadBurg, a web- and mobile-based application for behavioral rating and competency discovery for individuals. The predicament for Sangeeth is about the uncertainties related to the new launch from a business perspective, as well as the concern whether the core principles of democratization and detachment that he identified with, would stand the test in this launch.

Complexity academic level

Master level program (e.g. MBA).

Supplementary materials

Teaching Notes are available for educators only.

Subject code

CSS 3: Entrepreneurship.

Details

Emerald Emerging Markets Case Studies, vol. 10 no. 1
Type: Case Study
ISSN: 2045-0621

Keywords

Article
Publication date: 1 April 2014

Arun Gupta, Ruth Bevan and Akshya Vasudev

The 2006 Post Graduate Medical Education Trust Board (PMETB) trainees' survey indicated inadequacies in handover procedures amongst medical and psychiatry trainees nationwide; and…

Abstract

Purpose

The 2006 Post Graduate Medical Education Trust Board (PMETB) trainees' survey indicated inadequacies in handover procedures amongst medical and psychiatry trainees nationwide; and in 2007 a local psychiatry trainees' survey found inadequate handover procedures. The purpose of this paper is to show how to improve handover practice through standard setting and sequential audit.

Design/methodology/approach

A Trust wide Standard Operating Procedure (SOP) for handover was developed. Trainees were audited on perception of handover experiences (2008, 2009 and 2010).

Findings

The audit revealed that the SOP was not consistently followed. Handing over “active problems” (AP) was perceived to occur frequently in 2008 (93.75 per cent), improved in 2009 (100 per cent for AP, 98 per cent for “problems which may arise”, (PA)); however deteriorated in 2010 (93 per cent for AP, 69 per cent for PA). Trainee satisfaction rates with handover improved each year (57 per cent in 2008, 75 per cent in 2009, 87 per cent in 2010, X2=3.7, df=2, p=0.16).

Practical implications

SOP development, subsequent audits and sharing of results improved handover practice. This has implications for training and patient safety. This project demonstrates a method of improving handover practices in a large mental health trust.

Originality/value

The work conducted is of interest to those working in psychiatry, not only from an education and training perspective, but also for clinical practice, in the UK as well as internationally.

Details

Clinical Governance: An International Journal, vol. 19 no. 2
Type: Research Article
ISSN: 1477-7274

Keywords

Open Access
Article
Publication date: 1 October 2020

Manjulika Srivastava, Bijayalaxmi Mishra, Dev Kant Rao, Navita Abrol, Vandana Varma and Bharat Bhushan

The purpose of this paper was to analyse the research trends on the Indian Open and Distance Education (ODE) system as reflected in the articles published in the prominent…

6932

Abstract

Purpose

The purpose of this paper was to analyse the research trends on the Indian Open and Distance Education (ODE) system as reflected in the articles published in the prominent journals of distance education across the world.

Design/methodology/approach

A study was undertaken to review the research articles on ODE in India published in 11 prominent peer-reviewed journals of distance education during the period 2010–2019. Content analysis was done to find out areas of research undertaken in the ODE of India based on a validated classification of research areas; types of research studies conducted; and authorship and publication patterns.

Findings

Out of a total of 2,571 articles published in 11 selected journals, only 191 (7.42%) pertained to ODE in India. The majority of these 191 articles (68.42%) were published in Indian journals. The Indian and Asian journals together accounted for 93.55% of total articles. Globally, the share of articles on the Indian ODE system was significantly low ranging between 4.27 and a maximum of 10.77%, which was much below expectations from a country having the maximum number of ODE learners in the world. Results further revealed that 63% of the contributors to research on ODE in India were affiliated to Indira Gandhi National Open University.

Research limitations/implications

The limitation of this study was only analysing the research articles published in journals of distance education and other types of articles, namely, book reviews, editorials, field notes and workshop reports were excluded from the analysis.

Practical implications

The study is intended to help researchers, policymakers, and open and distance education institutions to draw a roadmap for the promotion and conduct of system-based research, which would be vital for strengthening the system.

Social implications

The quantum of research is not proportionate to the number of faculty members working in the ODE system of India and the large number of learners that it serves, which is a matter of concern. For any system to grow its periodic systemic review is essential. The research outcomes need to be ploughed back into the system for its betterment.

Originality/value

The study is original. There is no such study undertaken till date. This study will be extremely useful to researchers, as the gaps in distance education research which are yet to be addressed, have been identified by the authors.

Details

Asian Association of Open Universities Journal, vol. 15 no. 2
Type: Research Article
ISSN: 1858-3431

Keywords

Article
Publication date: 11 May 2015

Rakesh Arrawatia, Arun Misra and Varun Dawar

The study aims to investigate the relationship between competition and efficiency. Using bank-level data for Indian banks, relationship between competition and efficiency is…

1477

Abstract

Purpose

The study aims to investigate the relationship between competition and efficiency. Using bank-level data for Indian banks, relationship between competition and efficiency is examined by applying the Granger causality test for the period 1996 to 2011.

Design/methodology/approach

Lerner Index is a measure of market power and is applied for estimation of competition. Data envelopment analysis technique is applied for measuring efficiency in the Indian banking system along with the Granger causality test to look at the relationship between competition and efficiency.

Findings

Results show an increasing trend for competition for the period 1996 to 2004, and after that there is fall in competitive levels. Granger causality tests show that competition positively effects efficiency and vice-versa.

Practical implications

This study gives an insight into the relationship between competition and efficiency, thus providing an alternative view to the structure–conduct–performance paradigm. An efficient banking system can positively impact the growth of an economy and, hence, competition and efficiency are important decision parameters for regulators and could help them in decision-making and policy formulation.

Originality/value

This study has covered more than 90 per cent of the banking assets for looking at competition and efficiency in the banking sector. Policymakers can try to improve competitive levels in banking so as to improve efficiency in the banking sector which can further help in developing the investment-savings cycle.

Details

International Journal of Law and Management, vol. 57 no. 3
Type: Research Article
ISSN: 1754-243X

Keywords

Article
Publication date: 13 April 2022

Aaron Hill, Arun Upadhyay and Rafik Beekun

Many scholars and practitioners lament female pay gaps and the ethical issues they pose; yet several studies provide supporting evidence showing that the female CEOs earn more…

Abstract

Purpose

Many scholars and practitioners lament female pay gaps and the ethical issues they pose; yet several studies provide supporting evidence showing that the female CEOs earn more than men. However, other studies find an insignificant difference between male and female CEO pay. 10; The purpose of this study is to re-investigate this question to uncover the root of the divergent findings and thereby clarify our understanding of this important issue of CEOs’ gender pay gaps.

Design/methodology/approach

Evidence suggests the CEO position is at times a rare instance where typical pay gaps for female workers reverse such that these executives earn pay premiums. Recently, Gupta et al. (2018) called findings for female CEO pay premiums into question, failing to find differences despite using data similar to prior studies. The authors investigated the discrepant findings, identifying and showing that the use of an analytical approach to account for unobserved differences (i.e. fixed effects) are inappropriate for the data structure drives’ divergent findings. The authors also find that results are affected by the industries and time-frames used in the analyses.

Findings

The authors find that female CEOs outearn their male counterparts. However, the authors also show that the significance of results is affected by the industries and time-frames used in the analyses.

Originality/value

It is an original work that reexamines a somewhat controversial issue on the gender differences in CEO pay.

Details

Managerial Finance, vol. 48 no. 8
Type: Research Article
ISSN: 0307-4358

Keywords

Article
Publication date: 21 June 2024

Surbhi Gupta, Arun Kumar Attree, Ranjana Thakur and Vishal Garg

This study aims to examine the role of Bilateral Investment Treaties (BITs) in attracting higher foreign direct investment (FDI) inflows into the major emerging economies namely…

Abstract

Purpose

This study aims to examine the role of Bilateral Investment Treaties (BITs) in attracting higher foreign direct investment (FDI) inflows into the major emerging economies namely Brazil, Russia, India, China and South Africa (BRICS) from the source developed, developing and other emerging economies over a period of 18 years from 2001 to 2018.

Design/methodology/approach

To estimate the results, panel data regression on a gravity-knowledge capital model has been used. To account for the problem of endogeneity we have used the two-step difference Generalised Method of Moments estimator proposed by Arellano and Bond (1991).

Findings

We find that contradictory to theory and expectations, BITs result in a fall in FDI inflows in BRICS economies. BITs ratified by BRICS economies are not able to provide a sound and secure investment environment to foreign investors, thereby discouraging FDI in these economies.

Originality/value

To the best of the authors’ knowledge, this study is the first to examine the impact of BITs on FDI inflows into the emerging BRICS economies. Further, the impact of BITs on FDI flows among developed nations, i.e. north-north FDI and from developed to developing countries, i.e. north-south FDI has already been studied by many researchers. But so far, no study has examined this impact on FDI among developing and emerging economies (south-south FDI), despite an increase in FDI flows among these economies. Therefore, this study seeks to overcome the limitations of previous studies and tries to find out the impact of BITs on FDI inflows in BRICS economies not only from source developed but also from source developing and other emerging economies.

Details

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

Keywords

Article
Publication date: 17 June 2024

Samayita Guha, Arun Upadhyay and Manjul Gupta

In spite of the fact that today’s supply chains are global, it is surprising the current research lacks studies primarily focusing on Latin American (LATAM) firms. To enhance our…

Abstract

Purpose

In spite of the fact that today’s supply chains are global, it is surprising the current research lacks studies primarily focusing on Latin American (LATAM) firms. To enhance our understanding in this domain, this study examines the impact of technology investments on inventory turnover, asset turnover and employee productivity measures within the LATAM context.

Design/methodology/approach

We use an unbalanced panel of over 2,101 firm-year observations from the Worldscope database between 2010 and 2022 and limit our analysis to firms located in the Latin American region. We use panel data and regression analysis to test our hypotheses.

Findings

The findings reveal a positive impact of technology investments on inventory turnover, asset turnover and employee productivity.

Originality/value

There is a dearth of research in the discipline primarily focusing on the firms from the LATAM region. The extant literature has largely focused on the Western firms and we know from prior cross-cultural research that there are significant differences in terms of how firms and governments operate differently in emerging and non-Western regions such as LATAM or parts of Asia and Africa. By specifically focusing on a sample of LATAM firms, the study makes important contributions to the extant literature with respect to the role of technology investments in improving inventory turnover, and also on asset turnover and employee productivity. The study further provides implications for practice.

Details

The International Journal of Logistics Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0957-4093

Keywords

Book part
Publication date: 28 November 2022

Manjula S. Salimath and Leyla Orudzheva

Family businesses have several distinct features that distinguish them from other businesses. This aspect makes it imperative that scholars investigate issues with an additional…

Abstract

Family businesses have several distinct features that distinguish them from other businesses. This aspect makes it imperative that scholars investigate issues with an additional focus on the interplay of family business dynamics. In this chapter, we explore the issues of power and corruption within family business, with the understanding that prior examinations of this phenomenon were primarily restricted to large public corporations that are not family owned. The key contribution of this chapter is to shed light on the dark side of family business, namely power enabled corruption. We do so by considering three dimensions that are unique to family firms, namely, ownership and control, generations, and governance. In particular, we highlight how these dimensions can facilitate corruption. It is possible that they may also challenge family business that try to detect, deter, and control corruption within their ranks. The lack of objective external evaluation, the ineffectiveness of internal checks, generational issues, family control, and the restricted nature of governance appear to contribute to exacerbating tensions that promote corruption becoming entrenched within family businesses. Following a case method approach, several illustrative examples of cases of power and corruption within family firms are provided, representing different geographic regions of the world, to showcase the widespread nature of this phenomenon. The three family business cases we illustrate (Grupo Odebrecht in Latin America, Sahara Group in South Africa and Foremost Maritime Group in China) represent multiple countries, continents, and geo-political frontiers. Each case illustrates how both corruption and power reinforce each other in family businesses. Implications of the magnifier effect of power on corruption in family business are discussed in terms of its impact, scale, and its enabling effect by providing a road map to corruption.

Details

Family Business Debates
Type: Book
ISBN: 978-1-80117-667-5

Keywords

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