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Article
Publication date: 16 July 2019

Akhil Khajuria, Modassir Akhtar, Manish Kumar Pandey, Mayur Pratap Singh, Ankush Raina, Raman Bedi and Balbir Singh

AA2014 is a copper-based alloy and is typically used for production of complex machined components, given its better machinability. The purpose of this paper was to study…

Abstract

Purpose

AA2014 is a copper-based alloy and is typically used for production of complex machined components, given its better machinability. The purpose of this paper was to study the effects of variation in weight percentage of ceramic Al2O3 particulates during electrical discharge machining (EDM) of stir cast AA2014 composites. Scanning electron microscopy (SEM) examination was carried out to study characteristics of EDMed surface of Al2O3/AA2014 composites.

Design/methodology/approach

The effect of machining parameters on performance measures during sinker EDM of stir cast Al2O3/AA2014 composites was examined by “one factor at a time” (OFAT) method. The stir cast samples were obtained by using three levels of weight percentage of Al2O3 particulates, i.e. 0 Wt.%, 10 Wt.% and 20 Wt.% with density 1.87 g/cc, 2.35 g/cc and 2.98 g/cc respectively. Machining parameters varied were peak current (1-30 amp), discharge voltage (30-100 V), pulse on time (15-300 µs) and pulse off time (15-450 µs) to study their influence on material removal rate (MRR), tool wear rate (TWR) and surface roughness (SR).

Findings

MRR and SR decreased with an increase in weight percentage of ceramic Al2O3 particulates at the expense of TWR. This was attributed to increased microhardness for reinforced stir cast composites. However, microhardness of EDMed samples at fixed values of machining parameters, i.e. 9 amp current, 60 V voltage, 90 µs pulse off time and 90 µs pulse on time reduced by 58.34, 52.25 and 46.85 per cent for stir cast AA2014, 10 Wt.% Al2O3/AA2014 and 20 Wt.% Al2O3/AA2014, respectively. SEM and quantitative energy dispersive spectroscopy (EDS) analysis revealed ceramic Al2O3 particulate thermal spalling in 20 Wt.% Al2O3/AA2014 composite. This was because of increased particulate weight percentage leading to steep temperature gradients in between layers of base material and heat affected zone.

Originality/value

This work was an essential step to assess the machinability for material design of Al2O3 reinforced aluminium metal matrix composites (AMMCs). Experimental investigation on sinker EDM of high weight fraction of particulates in AA2014, i.e. 10 Wt.% Al2O3 and 20 Wt.% Al2O3, has not been reported in archival literature. The AMMCs were EDMed at variable peak currents, voltages, pulse on and pulse off times. The effects of process parameters on MRR, TWR and SR were analysed with comparisons made to show the effect of Al2O3 particulate contents.

Details

World Journal of Engineering, vol. 16 no. 4
Type: Research Article
ISSN: 1708-5284

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Article
Publication date: 7 June 2021

Manish Kumar Dwivedi

The purpose of this study is to examine the effectiveness of Yoga Nidra in mitigating stress. This study has also investigated the impact of demographic profiles such as…

Abstract

Purpose

The purpose of this study is to examine the effectiveness of Yoga Nidra in mitigating stress. This study has also investigated the impact of demographic profiles such as age, marital status and gender on stress.

Design/methodology/approach

The sample selected for this study consists of 200 respondents. The two groups were divided into the study: control and experimental groups. The data has been collected from the respondents pre and post-test administration of Yoga Nidra intervention within an interval of one month. The subjects have been instructed to practice Yoga Nidra. There is one follow-up at an interval of one month to assess the level of stress.

Findings

It has been observed that the stress level of participants reduced after administrating the intervention of Yoga Nidra. The findings suggested that Yoga Nidra is an effective mechanism in mitigating stress.

Research limitations/implications

The limitation of this study is that it might be possible that the respondents would have also practiced any other yogic techniques. Therefore, it is difficult to examine the impact of one yogic technique independently on stress.

Practical implications

The implication of this study exists in promoting the health of the people by improving the well-being at a minimal cost. It also results in saving the medical expenditure of the people.

Social implications

The practice of Yoga Nidra helps to improve the well-being of people. Ultimately, it has an impact on boosting the economy of the nation as a whole by reducing the medical expenses incurred in treating people suffered from various diseases.

Originality/value

This study is novel, which helps to make the society free from distress. It provides an effective stress management mechanism that provides relaxation at physical, mental and emotional levels. It ultimately results in saving medical expenditure and cost incurred in the treatment of various kinds of diseases.

Details

The Journal of Mental Health Training, Education and Practice, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1755-6228

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Article
Publication date: 8 March 2021

Manish Gupta, Yusuf Hassan, Jatin Pandey and Ankur Kushwaha

While prior studies have highlighted the brighter side of technology adoption in improving human resource (HR) functions, the dark side pertaining to the adoption of…

Abstract

Purpose

While prior studies have highlighted the brighter side of technology adoption in improving human resource (HR) functions, the dark side pertaining to the adoption of technology in people management within organizations has gone relatively unnoticed. The current study tries to demystify the dark side of electronic human resource management (e-HRM) by examining banking institutions in India which are believed to have undergone several transformations in recent years.

Design/methodology/approach

This study adopts an inductive qualitative approach to examine the research problem. In total, 53 semi-structured interviews were conducted with the employees of eight public sector banks in India. The interviews were transcribed. The analysis of the data was done using the thematic analysis technique.

Findings

The findings of the study suggest that there is a stratification of the workplace in banking institutions into digital natives and digital migrants. This social stratification is based on technology adoption and usage which has further created problems in the form of knowledge hiding and perceived workplace conflicts.

Practical implications

The findings of the current study have important theoretical and managerial implications. It not only extends the current scholarship on the transtheoretical model of change but it also has strong managerial implications as it highlights the need for the adoption of customized e-HRM training curriculums for the workforce based on their age, education, work experience and expertise.

Originality/value

Current research on the dark side of e-HRM is inadequate. Furthermore, the evolution of banking institutions from being a typical bureaucratic organization into a hybrid one has not been examined in the context of e-HRM.

Details

International Journal of Manpower, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0143-7720

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Article
Publication date: 3 June 2020

Prashant Singh, Rajesh Kumar Jha, Manish Goswami and B.R. Singh

The purpose of this paper is to investigate the effect of high-k material HfO2 as a buffer layer for the fabrication of metal-ferroelectric-insulator-silicon (MFeIS…

Abstract

Purpose

The purpose of this paper is to investigate the effect of high-k material HfO2 as a buffer layer for the fabrication of metal-ferroelectric-insulator-silicon (MFeIS) structures on Si (100) substrate.

Design/methodology/approach

RF-sputtered Pb[Zr0.35Ti0.65]O3 or (PZT) and plasma-enhanced atomic layer deposited HfO2 films were selected as the ferroelectric and high-k buffer layer, respectively, for the fabrication of metal-ferroelectric-insulator-silicon (MFeIS) structures on Si (100) substrate. Multiple angle ellipsometry and X-ray diffraction analysis was carried out to obtain the crystal orientation, refractive index and absorption coefficient parameters of the deposited/annealed films. In the different range of annealing temperature, the refractive index was observed in the range of 2.9 to 2 and 1.86 to 2.64 for the PZT and HfO2 films, respectively

Findings

Electrical and ferroelectric properties of the dielectric and ferroelectric films and their stacks were obtained by fabricating the metal/ferroelectric/silicon (MFeS), metal/ferroelectric/metal, metal/insulator/silicon and MFeIS capacitor structures. A closed hysteresis loop with remnant polarization of 4.6 µC/cm2 and coercive voltage of 2.1 V was observed in the PZT film annealed at 5000 C. Introduction of HfO2 buffer layer (10 nm) improves the memory window from 5.12 V in MFeS to 6.4 V in MFeIS structure with one order reduction in the leakage current density. The same MFeS device was found having excellent fatigue resistance property for greater than 1010 read/write cycles and data retention time more than 3 h.

Originality/value

The MFeIS structure has been fabricated with constant PZT thickness and varied buffer layer (HfO2) thickness. Electrical characteristics shows the improved leakage current and memory window in the MFeIS structures as compared to the MFeS structures. Optimized MFeIS structure with 10-nm buffer layer shows the excellent ferroelectric properties with endurance greater than E10 read/write cycles and data retention time higher than 3 h. The above properties indicate the MFe(100 nm)I(10 nm)S gate stack as a potential candidate for the FeFET-based nonvolatile memory applications.

Details

Microelectronics International, vol. 37 no. 3
Type: Research Article
ISSN: 1356-5362

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Article
Publication date: 13 May 2019

Ram Shankar Uraon and Manish Gupta

The purpose of this paper is to examine the effect of human resource development (HRD) practices on perceived operational and market performances in the software companies…

Abstract

Purpose

The purpose of this paper is to examine the effect of human resource development (HRD) practices on perceived operational and market performances in the software companies in India, and also the mediating effect of operational performance in the relationship between HRD practices and market performance.

Design/methodology/approach

Data were collected from 516 professionals working in 37 software companies in India. Partial least square (PLS) was used to test the proposed structural equation model.

Findings

The findings reveal that the HRD practices significantly affect market performance. However, operational performance, as a mediator, was found to have a crucial role in transferring the effects of HRD practices to market performance.

Research limitations/implications

The findings of this study are in line with the theory of HRD which suggests a positive relationship between HRD and organizational performance.

Practical implications

The results suggest that to enhance the market performance, organizations need to enhance operational performance by meticulously designing and implementing the series of HRD practices.

Originality/value

This study is one of its kind to overcome the limitations of earlier studies to examine the effect of comprehensive dimensions of HRD on operational and market performance.

Details

International Journal of Productivity and Performance Management, vol. 69 no. 1
Type: Research Article
ISSN: 1741-0401

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Article
Publication date: 22 October 2019

Manu Sharma, Manish Gupta and Sudhanshu Joshi

The purpose of the study is twofold. The first objective is to identify adoption barriers (AdoBs) in engaging young consumers in the Omni-channel retailing (OCR). The…

Abstract

Purpose

The purpose of the study is twofold. The first objective is to identify adoption barriers (AdoBs) in engaging young consumers in the Omni-channel retailing (OCR). The second objective is to develop interrelationship among identified AdoBs.

Design/methodology/approach

The study used interpretative structural modeling–fuzzy ( Matriced’ Impacts Croisés Multiplication Appliquée a UN Classement) methods on 18 AdoBs identified from the existing literature and validated from 10 experts and 137 young consumers through pairwise comparison using the arithmetic hierarchical process method. The resulting ten barriers were further investigated for identifying the strength of relationships among them.

Findings

The study has identified price inconsistency as the dominant AdoB that restricts young consumers in engaging with OCR. The other critical AdoBs include lack of coordination among the channels, and information sharing and inconsistent price discount are the main barriers that affect all the other barriers among the 10 AdoBs identified in this study. The data also revealed that the young consumers exhibit the research-online purchase-offline effect in the purchase process.

Research limitations/implications

The research study has undertaken ten barriers only. The interrelationship among the barriers may be tested further with advanced techniques. The data have been collected from young consumers of emerging markets only which may be further extended for other markets.

Practical implications

This study helps practitioners and decision-makers understand about AdoBs faced by the young consumers influencing the purchase-intention process. Retailers or marketers are encouraged to focus on price consistency, advanced shared information system, proper coordination and developing trust of consumers in sharing their data to enhance the acceptability of Omni channels. Moreover, the identification of barriers and their strength offer marketers or retailers an opportunity to engage them in an effective manner and thus create value using communication channels.

Social implications

Social benefits of understanding barriers are helpful for transforming the existing retail channel into a fully integrated Omni-channel ecosystem. For this, AdoBs identified and their inter-relationships explored in this study could be used for engaging young consumers in OCR.

Originality/value

To date, the research on Omni-channel barriers in the present context is scant. The research provides insides on identified dimensions on young consumer engagement in OCR.

Details

Young Consumers, vol. 21 no. 2
Type: Research Article
ISSN: 1747-3616

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Article
Publication date: 12 November 2018

Manish Gupta and Musarrat Shaheen

The purpose of this paper is to examine the mediating role of psychological capital (PsyCap) between work engagement (WE) and general well-being (GWB) as well as between…

Abstract

Purpose

The purpose of this paper is to examine the mediating role of psychological capital (PsyCap) between work engagement (WE) and general well-being (GWB) as well as between WE and control at work (CAW).

Design/methodology/approach

Data were collected from 200 medical employees involved in rendering healthcare services. Structural equation modeling was done to test the hypotheses.

Findings

Analyses of the data revealed that PsyCap mediates fully between WE and CAW and partially between WE and GWB.

Research limitations/implications

The results show that PsyCap plays a positive role in transferring the impact of engagement levels to GWB and CAW. The results augment the broaden-and-build theory by explaining how positivity at the workplace can help the engaged employees improve well-being and CAW.

Practical implications

Hospitals in India are encouraged to recruit psychologically capable (high in PsyCap) employees. Such psychologically capable and engaged employees have greater CAW and have higher general well-being.

Originality/value

This study is among the few preliminary studies which have focused on the mechanism through which well-being and CAW of employees involved in healthcare services in India get affected.

Details

Evidence-based HRM: a Global Forum for Empirical Scholarship, vol. 6 no. 3
Type: Research Article
ISSN: 2049-3983

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Article
Publication date: 8 June 2015

Amit Sharma, Manish Garg and Satnam Singh

The purpose of this paper is to develop hybrid aluminum metal matrix composite by stir casting process, reinforced with graphite and hard boron carbide particles to…

Abstract

Purpose

The purpose of this paper is to develop hybrid aluminum metal matrix composite by stir casting process, reinforced with graphite and hard boron carbide particles to enhance the wear resistance. An attempt is made to optimize the wear (weight loss) and coefficient of friction (COF) by considering three factors, i.e. normal load, track diameter and sliding speed which were varied at three different levels.

Design/methodology/approach

The effect of graphite and boron carbide on microhardness was studied by adding them in varying percentages. After determining the best combination of hybrid reinforcements, optimization of wear (weight loss) and COF was carried out at various levels of considered factors. Taguchi design of experiments was used using the software “Minitab 16.1”. ANOVA was used to analyze the effect of various parameters on wear and COF. To validate the results, mathematical modeling was carried out in terms of regression equations and results obtained by regression equations.

Findings

The results revealed that the lower weight percentage of graphite (3 per cent) and boron carbide (1 per cent) significantly improved microhardness of developed composites. Results of ANOVA revealed that normal load was the main contributing factor for wear and COF. The results obtained by regression equations and confirmatory tests were within the results obtained by ANOVA.

Originality/value

To the best of the author’s knowledge, very less work has been reported on optimization of wear and COF using hybrid reinforcement particles of graphite and boron carbide.

Details

Industrial Lubrication and Tribology, vol. 67 no. 4
Type: Research Article
ISSN: 0036-8792

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Article
Publication date: 17 August 2020

Vinayak Ram Tripathi, Manish Popli, Swati Ghulyani, Shrey Desai and Ajai Gaur

This paper aims to examine the role of information and communication technology (ICT) in the knowledge creation practices adopted by a health care organization. The…

Abstract

Purpose

This paper aims to examine the role of information and communication technology (ICT) in the knowledge creation practices adopted by a health care organization. The organization is delivering care to patients of a genetic disorder, called the sickle cell, in tribal communities. The paper identifies how ICT intermediates knowledge creation practices across the organizational boundaries wherein tribal patients, front-line counselors and expert physicians interact, which then produces context-specific, evidence-based medicine (EBM).

Design/methodology/approach

The knowledge-in-practice approach is adopted to conduct an ethnographic study of sickle cell care practices in a non-profit health care organization in Western India. The analysis focuses on ICT-mediated interactional practices among the physicians, front-line counselors, tribal patients and their families, for more than a year-long observation. These are supplemented with informal and formal interviews, archival records and vignettes based on several episodes to explicate the key knowledge creation practices.

Findings

Technology-mediated informative interactions at organizational boundaries can bridge socio-linguistic and interpretive barriers between actors, while also providing a generative structure that leads to the creation of longitudinal clinical evidence about a rare genetic disorder. Three specific ICT-entwined knowledge creation practices emerge, namely, knowing the community, increasing interactional engagement and constructing gradients of socio-clinical history. These practices generate organization-wide knowledge about the social and clinical dimensions of the genetic disorder. The findings are presented through vignettes and a novel conceptual framework.

Research limitations/implications

This study identifies various useful knowledge creation practices in health care delivery for resource-constrained emerging economy contexts. Further, the study suggests that the involvement of local front-line actors and ICT can become important resources in the delivery of health care in these settings.

Originality/value

A novel framework is developed which demonstrates knowledge creation at organizational boundaries wherein the actors use ICT-based practices for effective delivery of health care. The proposed framework may be used by health care organizations in similar contexts providing care to marginalized communities.

Details

Journal of Knowledge Management, vol. 25 no. 3
Type: Research Article
ISSN: 1367-3270

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Article
Publication date: 1 February 2013

Manish Shukla and Sanjay Jharkharia

The purpose of this paper is to present a literature review of the fresh produce supply chain management (FSCM). FSCM includes the processes from the production to…

Abstract

Purpose

The purpose of this paper is to present a literature review of the fresh produce supply chain management (FSCM). FSCM includes the processes from the production to consumption of fresh produce (fruits, flowers and vegetables).

Design/methodology/approach

Literature review is done by systematically collecting the existing literature over a period of 20 years (1989‐2009) and classifying it on the basis of structural attributes such as problem context, methodology and the product under consideration. The literature is also categorized according to the geographic region and year of publication.

Findings

There is an increase in interest towards FSCM still there is an absence of a journal with the prime attention towards FSCM. The key finding of this review is that the main interest is towards consumer satisfaction and revenue maximization with post‐harvest waste reduction being a secondary objective. It is revealed from the review that most of the literature is fragmented and is in silos. Lack of demand forecasting, demand and supply mismatch, lesser integrated approach etc are the major causes of concerns.

Research limitations/implications

The authors have taken only the fresh produce (fruits, flowers and vegetables), authors may also look at other perishable items such as milk, meat, etc.

Practical implications

Result shows a product‐problem‐methodology mapping which may serve as a framework for the managers addressing issues in FSCM.

Originality/value

Most of the prior literature reviews are focused on a specific issue such as production planning or inventory management and ignore the broader perspective. There exists a need of having a detailed literature review covering all the operational issues in FSCM. This review fills this gap in the FSCM literature.

Details

International Journal of Operations & Production Management, vol. 33 no. 2
Type: Research Article
ISSN: 0144-3577

Keywords

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