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Article
Publication date: 18 November 2022

Swati Alok, Navya Kumar and Sudatta Banerjee

COVID-19 placed millions of employees under work-from-home/telework. Employers intend extending telework for the long-term, anticipating business benefits. But the…

Abstract

Purpose

COVID-19 placed millions of employees under work-from-home/telework. Employers intend extending telework for the long-term, anticipating business benefits. But the benefits are impacted by employees' well-being/ill-being, which is affected by the satisfaction of psychological needs. In turn, need satisfaction is influenced by employees' personal/job attributes. As work-from-home's blended environment disrupts routines, the satisfaction of the psychological need for structure or routines was examined in this study, along with the effect of personal/job attributes.

Design/methodology/approach

Cross-section primary data were collected from 500 teleworking information technology employees from India and analysed using partial least squares structural equation modelling. Vigour and exhaustion represented well-being and ill-being. Telework self-efficacy, standardised job, technology assistance and supervisor social support were the determinants or personal/job attributes. Need for structure satisfaction was the mediator.

Findings

Telework self-efficacy, technology assistance and supervisor social support were positively associated with structure satisfaction. In turn, structure satisfaction was related positively with vigour and negatively with exhaustion, and thus mediated between personal/job attributes and vigour/exhaustion. Standardised job did not affect vigour, exhaustion or structure satisfaction.

Originality/value

Need for structure is mostly studied as a trait, with implications of greater/lesser preference for structure examined. However, this work acknowledges structure as a basic ubiquitous need. Everyone needs some structure. Hence, need for structure is researched from the novel perspective of its satisfaction. This paper also uniquely combines job demands–resources model which identifies personal/job attributes, with concepts of epistemic which posit the need for structure.

Details

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

Keywords

Article
Publication date: 15 November 2022

Navya Kumar and Swati Alok

Work-from-home (WFH) gained ground with COVID and will now continue to be a part of India’s future of work. Under WFH information and communication technologies (ICT…

Abstract

Purpose

Work-from-home (WFH) gained ground with COVID and will now continue to be a part of India’s future of work. Under WFH information and communication technologies (ICT) media become the primary/sole mode of communication for employees, which holds several implications for employers and employees. Therefore, this study aims to investigate the impact of ICT media characteristics and usage frequency on multiple WFH outcomes. Specifically studied was ICT media’s ability to support synchronicity or coordinated behaviours of individuals working together.

Design/methodology/approach

This work examined the effect of ICT media’s synchronicity-supporting ability and usage frequency on WFH employees’ need for competence and relatedness satisfaction, thereby wellbeing and preference to WFH. Data from 301 white-collar employees of varied manufacturing and services organizations of India was analysed via partial least squares structural equation modelling.

Findings

Achieving more synchronicity by frequently using ICT media that can better facilitate coordinated behaviours did not directly influence WFH employees’ feeling of belongingness (need for relatedness) or wellbeing. It did, however, positively affect their feeling of effectance (need for competence) and thereby wellbeing. However, unexpectedly, it negatively influenced preference to WFH more often.

Originality/value

This study has uniquely combined media synchronicity and self-determination theories to investigate the implications of a work practice on employee wellbeing and preferences. Also, an extensible media evaluation parameter was created that encompasses the characteristics and usage frequency of a set of ICT media.

Details

Journal of Indian Business Research, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1755-4195

Keywords

Article
Publication date: 31 May 2022

Navya Kumar, Swati Alok and Sudatta Banerjee

Even after COVID-19 pandemic, several organizations intend extending work-from-home (WFH), to the extent of making it permanent for many. However, WFH's impact on…

Abstract

Purpose

Even after COVID-19 pandemic, several organizations intend extending work-from-home (WFH), to the extent of making it permanent for many. However, WFH's impact on productivity remains uncertain. Therefore, this paper aims to study personal and job factors determining the likelihood of amount of work done at home being same/more vis-à-vis office.

Design/methodology/approach

Employees' basic psychological needs and job crafting tendencies; job-related aspects of task independence, technology resources and supervisory support; and several demographic factors are examined as determinants. Firth logistic regression analysis of data from 301 Indian white-collar employees is performed.

Findings

Demographically, longer exposure to WFH, greater work experience and being a support function worker increased the likelihood of same/greater amount of work done at home. Being a woman or married reduced the likelihood, while being a manufacturing/services worker was non-significant. Among psychological needs, greater needs for autonomy and relatedness decreased and increased the likelihood of same/greater amount of work done at home, respectively. Regarding personal and job resources, job crafting to increase structural job resources and supervisor support increased the likelihood of same/greater amount of work done at home versus office.

Originality/value

This paper adds to the limited India-centric literature on WFH; uniquely examining influences of individual personal attributes on amount of work done by combining job demands-resources (JD-R) model and basic psychological needs theory.

Details

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

Keywords

Article
Publication date: 21 December 2021

Swati Alok, Sudatta Banerjee and Navya Kumar

This study aims to identify demographic characteristics, personal attributes and attitudes and social support factors that adversely or favourably affect the likelihood of…

Abstract

Purpose

This study aims to identify demographic characteristics, personal attributes and attitudes and social support factors that adversely or favourably affect the likelihood of career persistence amongst women workers of the Indian IT sector.

Design/methodology/approach

The research, grounded in the social cognitive career theory, analyses primary data collected from 850 women working in IT via a survey. Based on an original definition of career persistence, the sample was segregated into 427 persistent and 423 non-persistent women. Logistic regression was performed to test for the effect of various determinants on the likelihood of women being career persistent versus non-persistent.

Findings

Being married, having children, as well as high levels of belief in gender disadvantage and work–family conflict lowered the likelihood of career persistence amongst women. While being a manager, possessing high career identity, high occupational culture fit, positive psychological capital and family support boost the likelihood.

Originality/value

The study examines women's actual continuance in an IT career vis-à-vis exit from the workforce/IT field, rather than women's stated intent to persist/quit as previously investigated. It uses logistic regression to identify both hurdles and aids on the path of women's career persistence. The findings can help recognize women more likely to struggle, thus be a first step in targeted organizational interventions to plug a leaky talent pipeline.

Details

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

Keywords

Article
Publication date: 20 December 2021

Navya Kumar, Swati Alok and Sudatta Banerjee

Gender diversity is known to trigger creative and relationship conflicts alike, the former a boon for innovation and the latter a bane. This study aims to explore the…

Abstract

Purpose

Gender diversity is known to trigger creative and relationship conflicts alike, the former a boon for innovation and the latter a bane. This study aims to explore the possibility of a gender mix that is “just right” for balancing the intensities of varied forms of conflict to boost innovation in firms in India. Specifically, this paper investigated the presence of an optimal level of women as a percentage of the firm’s full-time permanent employees (Percent-Women) that maximized the firm’s likelihood of product innovation (Product–Innovation–Likelihood).

Design/methodology/approach

Logistic regression analyses of firm-level data of Indian establishments of varied sizes and industries from World Bank Enterprise Surveys 2014 was performed. Instrumental variable addressed the potential endogeneity of Percent-Women.

Findings

The analysis demonstrated an inverted U-shaped relationship between Product–Innovation–Likelihood and Percent-Women. Product–Innovation–Likelihood peaked when Percent-Women lay between 35% and 58%, i.e. when the firm was gender-balanced or close to it.

Practical implications

The finding of an optimal level of female inclusion presents to firms a defined target of gender mix to be achieved, failing to which they may be limiting their innovation potential. It compels firms to view gender diversity as a business imperative with definite implications for their long-term performance.

Social implications

For India, the demonstrated relationship between workplace gender diversity and innovation brings additional reason and urgency to public initiatives, such as female literacy, for boosting female economic engagement. Innovation can power the next stage of the Indian growth story by engaging the heretofore insufficiently tapped female worker.

Originality/value

By demonstrating an optimal degree of female inclusion at which innovation potential peaks, the study reconciled opposing theories of diversity-driven conflicts and went beyond the commonly observed simple linear relationship between female inclusion and innovation. Further, the paper focused on India, a major developing economy with a vast female populace and growing innovation ambitions but scarcely researched for gender diversity’s role in innovation.

Details

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

Keywords

Article
Publication date: 4 September 2019

Navya Thirumaleshwar Hegde, V.I. George, C. Gurudas Nayak and Kamlesh Kumar

The purpose of this paper is to give reviews on the platform modeling and design of a controller for autonomous vertical take-off and landing (VTOL) tilt rotor hybrid…

Abstract

Purpose

The purpose of this paper is to give reviews on the platform modeling and design of a controller for autonomous vertical take-off and landing (VTOL) tilt rotor hybrid unmanned aerial vehicles (UAVs). Nowadays, UAVs have experienced remarkable progress and can be classified into two main types, i.e. fixed-wing UAVs and VTOL UAVs. The mathematical model of tilt rotor UAV is time variant, multivariable and non-linear in nature. Solving and understanding these plant models is very complex. Developing a control algorithm to improve the performance and stability of a UAV is a challenging task.

Design/methodology/approach

This paper gives a thorough description on modeling of VTOL tilt rotor UAV from first principle theory. The review of the design of both linear and non-linear control algorithms are explained in detail. The robust flight controller for the six degrees of freedom UAV has been designed using H-infinity optimization with loop shaping under external wind and aerodynamic disturbances.

Findings

This review will act as a basis for the future work on modeling and control of VTOL tilt rotor UAV by the researchers. The development of self-guided and fully autonomous UAVs would result in reducing the risk to human life. Civil applications include inspection of rescue teams, terrain, coasts, border patrol buildings, police and pipelines. The simulation results show that the controller achieves robust stability, good adaptability and robust performance.

Originality/value

The review articles on quadrotors/quadcopters, hybrid UAVs can be found in many literature, but there are comparatively a lesser amount of review articles on the detailed description of VTOL Tilt rotor UAV. In this paper modeling, platform design and control algorithms for the tilt rotor are presented. A robust H-infinity loop shaping controller in the presence of disturbances is designed for VTOL UAV.

Details

International Journal of Intelligent Unmanned Systems, vol. 8 no. 3
Type: Research Article
ISSN: 2049-6427

Keywords

Book part
Publication date: 4 December 2020

Abstract

Details

Application of Big Data and Business Analytics
Type: Book
ISBN: 978-1-80043-884-2

Article
Publication date: 6 January 2021

Navya Thirumaleshwar Hegde, V. I. George, C. Gurudas Nayak and Aldrin Claytus Vaz

This paper aims to provide a mathematical modeling and design of H-infinity controller for an autonomous vertical take-off and landing (VTOL) Quad Tiltrotor hybrid…

Abstract

Purpose

This paper aims to provide a mathematical modeling and design of H-infinity controller for an autonomous vertical take-off and landing (VTOL) Quad Tiltrotor hybrid unmanned aerial vehicles (UAVs). The variation in the aerodynamics and model dynamics of these aerial vehicles due to its tilting rotors are the key issues and challenges, which attracts the attention of many researchers. They carry parametric uncertainties (such as non-linear friction force, backlash, etc.), which drives the designed controller based on the nominal model to instability or performance degradation. The controller needs to take these factors into consideration and still give good stability and performance. Hence, a robust H-infinity controller is proposed that can handle these uncertainties.

Design/methodology/approach

A unique VTOL Quad Tiltrotor hybrid UAV, which operates in three flight modes, is mathematically modeled using Newton–Euler equations of motion. The contribution of the model is its ability to combine high-speed level flight, VTOL and transition between these two phases. The transition involves the tilting of the proprotors from 90° to 0° and vice-versa in 15° intervals. A robust H-infinity control strategy is proposed, evaluated and analyzed through simulation to control the flight dynamics for different modes of operation.

Findings

The main contribution of this research is the mathematical modeling of three flight modes (vertical takeoff–forward, transition–cruise-back, transition-vertical landing) of operation by controlling the revolutions per minute and tilt angles, which are independent of each other. An autonomous flight control system using a robust H-infinity controller to stabilize the mode of transition is designed for the Quad Tiltrotor UAV in the presence of uncertainties, noise and disturbances using MATLAB/SIMULINK. This paper focused on improving the disturbance rejection properties of the proposed UAV by designing a robust H-infinity controller for position and orientation trajectory regulation in the presence of uncertainty. The simulation results show that the Tiltrotor achieves transition successfully with disturbances, noise and uncertainties being present.

Originality/value

A novel VTOL Quad Tiltrotor UAV mathematical model is developed with a special tilting rotor mechanism, which combines both aircraft and helicopter flight modes with the transition taking place in between phases using robust H-infinity controller for attitude, altitude and trajectory regulation in the presence of uncertainty.

Details

International Journal of Intelligent Unmanned Systems, vol. 9 no. 3
Type: Research Article
ISSN: 2049-6427

Keywords

Article
Publication date: 26 March 2021

Abhay Sanjay Vidhyadharan and Sanjay Vidhyadharan

Tunnel field effect transistors (TFETs) have significantly steeper sub-threshold slope (24–30 mv/decade), as compared with the conventional metal–oxide–semiconductor…

Abstract

Purpose

Tunnel field effect transistors (TFETs) have significantly steeper sub-threshold slope (24–30 mv/decade), as compared with the conventional metal–oxide–semiconductor field-effect transistors (MOSFETs), which have a sub-threshold slope of 60 mv/decade at room temperature. The steep sub-threshold slope of TFETs enables a much faster switching, making TFETs a better option than MOSFETs for low-voltage VLSI applications. The purpose of this paper is to present a novel hetero-junction TFET-based Schmitt triggers, which outperform the conventional complementary metal oxide semiconductor (CMOS) Schmitt triggers at low power supply voltage levels.

Design/methodology/approach

The conventional Schmitt trigger has been implemented with both MOSFETs and HTFETs for operation at a low-voltage level of 0.4 V and a target hysteresis width of 100 mV. Simulation results have indicated that the HTFET-based Schmitt trigger not only has significantly lower delays but also consumes lesser power as compared to the CMOS-based Schmitt trigger. The limitations of the conventional Schmitt trigger design have been analysed, and improved CMOS and CMOS–HTFET hybrid Schmitt trigger designs have been presented.

Findings

The conventional Schmitt trigger implemented with HTFETs has 99.9% lower propagation delay (29ps) and 41.2% lesser power requirement (4.7 nW) than the analogous CMOS Schmitt trigger, which has a delay of 36 ns and consumes 8 nW of power. An improved Schmitt trigger design has been proposed which has a transistor count of only six as compared to the eight transistors required in the conventional design. The proposed improved Schmitt trigger design, when implemented with only CMOS devices enable a reduction of power delay product (PDP) by 98.4% with respect to the CMOS conventional Schmitt trigger design. The proposed CMOS–HTFET hybrid Schmitt trigger further helps in decreasing the delay of the improved CMOS-only Schmitt trigger by 70% and PDP by 21%.

Originality/value

The unique advantage of very steep sub-threshold slope of HTFETs has been used to improve the performance of the conventional Schmitt trigger circuit. Novel CMOS-only and CMOS–HTFET hybrid improved Schmitt trigger designs have been proposed which requires lesser number of transistors (saving 70% chip area) for implementation and has significantly lower delays and power requirement than the conventional designs.

Details

World Journal of Engineering, vol. 18 no. 5
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 5 October 2012

Loukia Evripidou

The purpose of the current study was first to identify the motives for mergers, and second to examine the effect of mergers on the systematic risk of bidder firms in the…

2806

Abstract

Purpose

The purpose of the current study was first to identify the motives for mergers, and second to examine the effect of mergers on the systematic risk of bidder firms in the airline industry.

Design/methodology/approach

To evaluate the effect of mergers in the systematic risk, two different market models are estimated for each company in the sample, one with pre‐merger data and one with post‐merger data. Then the results obtained from the two data sets are compared so as to identify possible differences.

Findings

The study has identified three diving motives behind the merges, namely cost efficiency, economies of scale, and market power. All of these motives are expected to affect the new firm's earnings stream and in turn affect its systematic risk. With the use of the market model the individual merger results are mixed and in line with the relevant literature. Nonetheless, the average results showed a decrease in the post‐merger systematic risk.

Research limitations/implications

A reduced post‐merger systematic risk indicates a success in achieving management objectives. Mergers can generate synergetic gains from increasing cost efficiencies and/or scale economies and can also increase shareholders value through the reduction in the new firm's cost of capital. However, to have a more valid perspective a larger number of mergers should be included in the sample together with alternative calculation of systematic risk to test the robustness of the results.

Originality/value

Taking into account the current economic hardship this paper addresses the issue of shareholders wealth maximization through mergers.

Details

International Journal of Organizational Analysis, vol. 20 no. 4
Type: Research Article
ISSN: 1934-8835

Keywords

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