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1 – 10 of 21Akhil 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 the…
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.
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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…
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.
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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 technology in…
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.
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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) structures on…
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.
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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 in…
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.
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Tanushree Mahato, Manish Kumar Jha, Akhaya Kumar Nayak and Neelam Kaushal
The purpose of the paper is to conduct a comprehensive bibliometric analysis and systematic review to examine the research landscape of women empowerment through participation in…
Abstract
Purpose
The purpose of the paper is to conduct a comprehensive bibliometric analysis and systematic review to examine the research landscape of women empowerment through participation in self-help groups (SHGs), identifying the eminent contributors, intellectual communities and future research agenda in the field of SHGs and women empowerment.
Design/methodology/approach
The global works of literature related to the theme of SHGs and women empowerment between 1998 and May 6, 2022 were scanned for bibliometric analysis and systematic review. A total of 176 English language documents from the Scopus database were extracted. Bibliometric analysis is conducted using Biblioshiny and VOSviewer software.
Findings
This study finds that SHGs are paramount in achieving rural women’s empowerment multidimensionally. Found that India is the most contributing country with 136 documents, and Ranjula Bali Swain and Fan Yang Wallentin are the most cited authors in the research field of SHGs and women empowerment. In addition, the paper proposes a comprehensive conceptual framework to portray rudimentary antecedents of women’s empowerment achieved through participation in SHGs.
Practical implications
This bibliometric analysis, along with a systematic review demonstrating a framework encapsulating the principal dimensions of women empowerment and their indicators, will be helpful to practitioners, government, policymakers and researchers working in the area of SHGs and women empowerment.
Originality/value
This study recognizes numerous significant contributions by eminent scholars and presents a concise review of the literature for novice researchers working in the area of SHGs and women empowerment.
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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 second…
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.
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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 WE and…
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.
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The study aims to investigate how the presence and absence of institutional equivalents (interaction of industry peers and local peers) affect the earnings management practices of…
Abstract
Purpose
The study aims to investigate how the presence and absence of institutional equivalents (interaction of industry peers and local peers) affect the earnings management practices of firms.
Design/methodology/approach
The study uses discretionary accruals to operationalize earnings management. A sample of 18,744 Bombay Stock Exchange (BSE) listed firm years spanning over 12 financial years (March 2010–March 2021) has been considered and analyzed through panel data regression models.
Findings
The author’s results show that the earnings management practices of a firm's institutional equivalents and the firm's own earnings management are positively associated, implying that firms closely follow their institutional equivalents. This association is found to be more pronounced among focal firms when the difference between the earnings management levels of industry peers and local peers is greater. Further, the author find that large firms aggressively imitate their industry peers and local peers, whereas profitability does not influence their imitation behavior.
Practical implications
The author’s findings have implications for understanding peer imitation processes, particularly when firms face increasingly multifaceted institutional environments. It suggests auditors and analysts take into account the earnings management practices of local and industry peers while analyzing the client's financial statements and making forecasts, respectively.
Originality/value
The study is among the pioneering attempts to explore the domain of earnings management from the lens of institutional equivalence and provides compelling evidence that the interaction of industry peers and local peers impacts the earnings management practices of firms.
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