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Article
Publication date: 7 August 2017

Hwanwoo Lee, Joon Hyung Park, Shing-Chung Ngan and T. Siva Tian

The purpose of this paper is to contribute to the human resources (HR) literature by using exploratory network analysis (ENA), a data-driven technique. This technique was…

Abstract

Purpose

The purpose of this paper is to contribute to the human resources (HR) literature by using exploratory network analysis (ENA), a data-driven technique. This technique was employed to discover how the perceived effectiveness of HR practices interrelate with employee perceptions on organizational cultural factors to enhance organizational commitment.

Design/methodology/approach

The authors used data from 1,459 employees of a large South Korean conglomerate and studied how individual HR practices could be enhanced by specific organizational cultural factors. The data were analyzed using ENA, which is an inductive approach.

Findings

The authors found that organizational commitment is associated with the positive perceptions of employees on the effectiveness of HR practices, such as performance appraisal, training and development, and compensation. Results show that when both HR practices and organizational cultural factors are considered, they appear to influence organizational commitment independently.

Research limitations/implications

Data were collected from a large conglomerate. The authors were limited by the use of the scales developed by a consulting firm. Therefore, readers should be cautious about the generalizability of the findings.

Originality/value

The application of a data-driven technique (ENA) highlights the potentially fertile methodological grounds for HR research. Literature on strategic HR management may benefit from inductive approaches, wherein data serve as primary foundation for the design and development of new theories.

Details

Evidence-based HRM: a Global Forum for Empirical Scholarship, vol. 5 no. 2
Type: Research Article
ISSN: 2049-3983

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Article
Publication date: 5 July 2021

Siva Marimuthu and Dhavamani Chinnathambi

Since the inception of aerospace engineering, reducing drag is of eternal importance. Over the years, researchers have been trying to improve the aerodynamics of National…

Abstract

Purpose

Since the inception of aerospace engineering, reducing drag is of eternal importance. Over the years, researchers have been trying to improve the aerodynamics of National Advisory Committee for Aeronautics (NACA) aerofoils in many ways. It is proved that smooth-surfaced NACA 0012 aerofoil produces more drag in compressible flow. Recent research on shark-skin pattern warrants a feasible solution to many fluid-engineering problems. Several attempts were made by many researchers to implement the idea of shark skin in the form of coatings, texture and more. However, those ideas are at greater risk when it comes to wing maintenance. The purpose of this paper is to implement a relatively larger biomimetic pattern which would make way for easy maintenance of patterned wings with improved performance.

Design/methodology/approach

In this paper, two biomimetic aerofoils are designed by optimizing the surface pattern of shark skin and are tested at different angles of attack in the computational flow domain.

Findings

The results of the biomimetic aerofoils prove that viscous and total drag can be reduced up to 33.08% and 3.68%, respectively, at high subsonic speed when validated against a NACA 0012 aerofoil. With the ample effectiveness of patched shark-skin pattern, biomimetic aerofoil generates as high as 10.42% lift than NACA 0012.

Originality/value

In this study, a feasible shark-skin pattern is constructed for NACA 0012 in a transonic flow regime. Computational results achieved using the theoretical model agree with experimental data.

Details

Aircraft Engineering and Aerospace Technology, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1748-8842

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Article
Publication date: 1 June 2015

Kerim Yapici and Salih Obut

The purpose of this paper is to numerically investigate steady, laminar natural and mixed convection heat transfer in a two-dimensional cavity by using a finite volume…

Abstract

Purpose

The purpose of this paper is to numerically investigate steady, laminar natural and mixed convection heat transfer in a two-dimensional cavity by using a finite volume method with a fourth-order approximation of convective terms, with and without the presence of nanoparticles. Highly accurate benchmark results are also provided.

Design/methodology/approach

A finite volume method on a non-uniform staggered grid is used for the solution of two-dimensional momentum and energy conservation equations. Diffusion terms, in the momentum and energy equations, are approximated using second-order central differences, whereas a non-uniform four-point fourth-order interpolation (FPFOI) scheme is developed for the convective terms. Coupled mass and momentum conservation equations are solved iteratively using a semi-implicit method for pressure-linked equation method.

Findings

For the case of natural convection problem at high-Rayleigh numbers, grid density must be sufficiently high in order to obtain grid-independent results and capture reality of the physics. Heat transfer enhancement for natural convection is observed up to a certain value of the nanoparticle volume fraction. After that value, heat transfer deterioration is found with increasing nanoparticle volume fraction.

Originality/value

Developed a non-uniform FPFOI scheme. Highly accurate benchmark results for the heat transfer of Al2O3-water nanofluid in a cavity are provided.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 25 no. 5
Type: Research Article
ISSN: 0961-5539

Keywords

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Article
Publication date: 1 November 2011

R.S. Sudheesh and N. Siva Prasad

The purpose of this paper is to study the effect of trailing liquid nitrogen (LN2) heat sink on arc welding of mild steel plates. The effect on temperature field, stress…

Abstract

Purpose

The purpose of this paper is to study the effect of trailing liquid nitrogen (LN2) heat sink on arc welding of mild steel plates. The effect on temperature field, stress and distortions are studied using experimental and numerical methods.

Design/methodology/approach

The methodology consists of experimental and numerical methods. The temperature measured at a point near the arc is used to estimate the cooling capacity of the heat sink using inverse heat transfer (IHT) method. The estimated cooling flux is applied to the finite element model to study the stress and distortions using LN2 heat sink. The stresses are measured using X‐ray diffraction technique and the distortions using dial gauges.

Findings

IHT method has been employed in estimating the cooling capacity of the LN2 jet. This has been applied to welding to study the effect on weld induced stresses and distortions. The method can be extended to calculate the heat removal rate in various manufacturing processes where cooling is employed.

Research limitations/implications

The lack of temperature dependent material properties resulted in deviation of stresses between analytical results and experiment values.

Originality/value

IHT method developed for heat removal capacity of trailing heat sink is a contribution. The estimated heat flux shows good agreement in analytical and experimental temperature values. These temperatures have been extended to calculate stresses and out of plane distortions in welding and there is a reasonable agreement between finite element analysis and experimental results.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 21 no. 8
Type: Research Article
ISSN: 0961-5539

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Article
Publication date: 29 April 2021

Thais Coutinho Gonçalves Silva, Rosley Anholon, Izabela Simon Rampasso, Osvaldo Luiz Gonçalves Quelhas, Walter Leal Filho, Luis Antonio Santa-Eulalia and Francisco Rodrigues Lima Junior

This article aims to evaluate the integration level of a quality management system (QMS) and an environmental management system (EMS) in a tire manufacturer and propose a…

Abstract

Purpose

This article aims to evaluate the integration level of a quality management system (QMS) and an environmental management system (EMS) in a tire manufacturer and propose a guide to evaluate the integration of these systems in companies.

Design/methodology/approach

The methodological strategies used in this research were literature review; and case study, with interviews to verify professionals' perception about benefits from integration. Data from interviews were analyzed through Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS).

Findings

The results showed that the studied company has a simple level of integration, observing only some low intensity benefits. Thus, it was recommended that the company partially integrate its management systems (MSs) before evolving into something more complex. The literature and the findings of case study were used as basis for proposing a guide to evaluate MS integration.

Originality/value

Lessons learned throughout the study and the suggested guide can support other companies to assess the integration level of their QMS and EMS. Thus, the findings presented here can be useful for researchers and managers.

Details

The TQM Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1754-2731

Keywords

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Article
Publication date: 10 April 2017

Gunnar Dahlin and Raine Isaksson

The purpose of this paper is to study how the expression “integrated management systems” is interpreted in literature, what it means to have an integrated management…

Abstract

Purpose

The purpose of this paper is to study how the expression “integrated management systems” is interpreted in literature, what it means to have an integrated management system (IMS) and what the results of this are.

Design/methodology/approach

A literature review was conducted based on Scopus using the search term “Integrated Management Systems.” In the chosen articles, effects of integration, scope, level and extent of integration and if the approach is inside-out or outside-in, have been analyzed.

Findings

Most articles on IMS conclude that integration is beneficial regarding cost saving, operational benefits and improved customer satisfaction. The general approach in the articles, describes an inside-out approach with focus on integrating existing management standards. The scope of integration covers typically management systems for quality, environment and occupational health and safety.

Practical implications

An IMS is found to be a system that integrates existing management standards based on an inside-out approach. This indicates possibilities for both practical improvement and research in exploring how integrated stakeholder needs could be managed, possibly as process-based IMSs.

Originality/value

This paper sheds light on the ambiguous interpretation of the IMS concept.

Details

The TQM Journal, vol. 29 no. 3
Type: Research Article
ISSN: 1754-2731

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Article
Publication date: 20 September 2018

Mehdi Hosseini Abadshapoori and Mohammad Hassan Saidi

The purpose of this paper is to investigate the natural convection behavior of nanofluids in an enclosure. The enclosure is a 3D capsule with curved boundaries filled with…

Abstract

Purpose

The purpose of this paper is to investigate the natural convection behavior of nanofluids in an enclosure. The enclosure is a 3D capsule with curved boundaries filled with TiO2-water nanofluid.

Design/methodology/approach

In this paper, a multiple relaxation times lattice Boltzmann method (MRT-LBM) has been used. Two-component LBM has been conducted to consider the interaction forces between nanoparticles and the base fluid.

Findings

Results show that the enhanced Nusselt number (Nu*) increases with the increase in volume fraction of nanoparticles (ϕ) and Ra number and decrease of nanoparticle size (λ). Additionally, the findings indicate that increasing volume fraction beyond a certain value decreases Nu*.

Originality/value

This paper presents a MRT model of lattice Boltzmann in a 3D curved enclosure. A correlation is also presented based on the current results for Nu* depending on Ra number, volume fraction and size of nanoparticles. Furthermore, a comparison for the convergence rate and accuracy of this model and the SIMPLE algorithm is presented.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 28 no. 8
Type: Research Article
ISSN: 0961-5539

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Article
Publication date: 6 December 2020

Atilla Savaş

The gas tungsten arc welding (GTAW) process is a widely used process that produces quality weldments. But the high heat generation from the GTAW arc can cause extreme…

Abstract

Purpose

The gas tungsten arc welding (GTAW) process is a widely used process that produces quality weldments. But the high heat generation from the GTAW arc can cause extreme temperatures as high as 20,000°C. The residual stresses and deformations are high accordingly. One of the methods for decreasing residual stresses and deformations is to change the welding pattern. In the literature, there are not so many examples of modeling dealing with welding patterns. This paper aims to investigate the influence of welding patterns on the deformations.

Design/methodology/approach

In this work, back-stepping patterns and partitioning of the weld line were investigated and the distortions and residual stresses were calculated. By doing this, temperature-dependent thermophysical and thermo-mechanical material properties were used. The temperature distribution and deformation from experiments with the same welding conditions were used for validation purposes.

Findings

Seven different welding patterns were analyzed. There is only one pattern with a single partition. There are three patterns investigated for both two and three partitioned weldings. The minimum deformation and the optimum residual stress combination is obtained for the last pattern, which is a three partitioned and diverging pattern.

Originality/value

The most important aspect of this paper is that it deals with welding patterns, which is not much studied beforehand. The other important thing is that the structural part and the thermal part of the simulation were coupled mutually and validated according to experiments.

Details

World Journal of Engineering, vol. 18 no. 2
Type: Research Article
ISSN: 1708-5284

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Article
Publication date: 2 July 2018

Ratna Achuta Paluri and Saloni Mehra

Research on corporate social responsibility (CSR) activities and consumer perception of CSR activities is increasing over the recent past. The purpose of this paper is to…

Abstract

Purpose

Research on corporate social responsibility (CSR) activities and consumer perception of CSR activities is increasing over the recent past. The purpose of this paper is to gain an understanding of the consumer perceptions of CSR activities of banks in India. It provides insights on whether consumers want their banks to take up CSR initiatives and would these perceptions influence their attitude towards the bank.

Design/methodology/approach

Self-report questionnaires were personally administered by the researchers and their team. Respondents’ responses were based on their awareness of their bank’s involvement in CSR initiatives. The study uses convenience sampling, given the resource limitations. The research was conducted in the city of Nashik, India during June–October 2015.

Findings

The results of the study show that consumer perception towards the CSR activities of the bank influenced their attitude and satisfaction. Though consumers expressed a need for their bank’s taking up CSR initiatives, this need did not influence their attitude towards the bank, contradicting studies in the past. Consumer perception of the bank’s involvement in the CSR activities was moderate, indicating that banks need to increase their communication about the CSR initiatives undertaken by them.

Practical implications

Unique contribution of current research is that the CSR reputation and CSR concern of consumers in the Indian context have been investigated for their influence on consumer attitude. Unlike previous studies, CSR concern does not influence consumer attitude or satisfaction. Findings provide important insights for practitioners and academicians focussing on the banking sector in India.

Originality/value

Little research is reported on consumer perception of CSR in banking sector. Current research tries to fill this gap.

Details

Benchmarking: An International Journal, vol. 25 no. 5
Type: Research Article
ISSN: 1463-5771

Keywords

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Article
Publication date: 4 June 2021

Luis Lisandro Lopez Taborda, Heriberto Maury and Jovanny Pacheco

There are many investigations in design methodologies, but there are also divergences and convergences as there are so many points of view. This study aims to evaluate to…

Abstract

Purpose

There are many investigations in design methodologies, but there are also divergences and convergences as there are so many points of view. This study aims to evaluate to corroborate and deepen other researchers’ findings, dissipate divergences and provide directing to future work on the subject from a methodological and convergent perspective.

Design/methodology/approach

This study analyzes the previous reviews (about 15 reviews) and based on the consensus and the classifications provided by these authors, a significant sample of research is analyzed in the design for additive manufacturing (DFAM) theme (approximately 80 articles until June of 2017 and approximately 280–300 articles until February of 2019) through descriptive statistics, to corroborate and deepen the findings of other researchers.

Findings

Throughout this work, this paper found statistics indicating that the main areas studied are: multiple objective optimizations, execution of the design, general DFAM and DFAM for functional performance. Among the main conclusions: there is a lack of innovation in the products developed with the methodologies, there is a lack of exhaustivity in the methodologies, there are few efforts to include environmental aspects in the methodologies, many of the methods include economic and cost evaluation, but are not very explicit and broad (sustainability evaluation), it is necessary to consider a greater variety of functions, among other conclusions

Originality/value

The novelty in this study is the methodology. It is very objective, comprehensive and quantitative. The starting point is not the case studies nor the qualitative criteria, but the figures and quantities of methodologies. The main contribution of this review article is to guide future work on the subject from a methodological and convergent perspective and this article provides a broad database with articles containing information on many issues to make decisions: design methodology; optimization; processes, selection of parts and materials; cost and product management; mechanical, electrical and thermal properties; health and environmental impact, etc.

Details

Rapid Prototyping Journal, vol. 27 no. 5
Type: Research Article
ISSN: 1355-2546

Keywords

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