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Article
Publication date: 4 September 2017

J.Z. Liu, Jing Shun Cai, L. Shi, D. Zhao, C.C. Chen, Q. Jiang and J.F. Sha

The purpose of this study is to investigate the inhibition efficiency and mechanism of a specific carboxylate corrosion inhibitor which consists of benzoic acid and…

Abstract

Purpose

The purpose of this study is to investigate the inhibition efficiency and mechanism of a specific carboxylate corrosion inhibitor which consists of benzoic acid and dimethylethanolamine on steel surface.

Design/methodology/approach

The performance of carbon steel influenced by this organic inhibitor under different concentration of Cl and immersion time was studied by linear polarization resistance and electrochemical impedance spectroscopy in a simulated concrete pore (SCP) solution. The surface morphology and composition of steel was also analyzed by optical microscopy, SEM and EDS to investigate the effect of inhibitor on the pattern of the steel surface after long-term immersion.

Findings

Carboxylate of benzoic acid and dimethylethanolamine can increase the chloride threshold level and decrease the corrosion area of carbon steel in SCP solution with 0.6 mol/L Cl even after 120 days exposure. The inhibition mechanism of inhibitor lies in quick adsorption and buffering effect at initial time then formed deposited layer on steel surface after long-term immersion in chloride-rich environment.

Originality/value

It demonstrated that the carboxylate corrosion inhibitor not only can improve the chloride threshold level for carbon steel but also effectively decrease the corrosion rate even in chloride-rich SCP solution after long-term immersion, which is different form the conventional amino alcohol.

Details

Anti-Corrosion Methods and Materials, vol. 64 no. 5
Type: Research Article
ISSN: 0003-5599

Keywords

Article
Publication date: 7 March 2016

Jian-Xin Shen, Shun Cai, Jian Yuan, Shuai Cao and Cen-Wei Shi

The purpose of this paper is to evaluate the cogging torque in a surface-mounted permanent magnet (SPM) machine with both uniformly and non-uniformly segmented stator cores and to…

Abstract

Purpose

The purpose of this paper is to evaluate the cogging torque in a surface-mounted permanent magnet (SPM) machine with both uniformly and non-uniformly segmented stator cores and to find out the optimal solution of stator core segmenting.

Design/methodology/approach

The cogging torque with segmented stators is synthesized from a single slot model, and analytical prediction is given to analyze the cogging torque with both uniformly and non-uniformly segmented stators. Finite element method (FEM) is used to figure out the electromagnetic field and validate the analytical prediction. Moreover, models with various shapes and positions of connecting tongues between the stator core segments are explored to achieve the optimal design.

Findings

The cogging torque is found to be greatly related to the number of segments and the electrical angle between adjacent additional air gaps caused by the tolerance of stator segments. Different shapes of the connecting tongues are tested and proved to be of great importance to the flux density, both radial and tangential, and therefore affect the cogging torque. Finally, position of the connecting tongues is perceived to have little influence on the performance of machine.

Practical/implications

By utilizing analytical prediction and FEM calculation, the optimal solution is discussed to minimize the cogging torque in the SPM machine from the perspective of the stator core segmentation.

Originality/value

This paper establishes formula of cogging torque with segmented stators and predicts the variation of cogging torque with analytical method. Besides, different combinations of segments are compared and measures to reduce the cogging torque produced by the segmentation are proposed.

Details

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, vol. 35 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 7 March 2016

Shun Cai, Meng-Jia Jin, He Hao and Jian-Xin Shen

The purpose of this paper is to comparatively study a synchronous reluctance machine (SynRM) and a permanent magnet assisted synchronous reluctance machine (PMASynRM) as…

Abstract

Purpose

The purpose of this paper is to comparatively study a synchronous reluctance machine (SynRM) and a permanent magnet assisted synchronous reluctance machine (PMASynRM) as alternatives of the interior permanent magnet synchronous machine (IPMSM), and to investigate the performance and conclude both advantages and disadvantages.

Design/methodology/approach

A unified mathematical model is established for the IPMSM, SynRM and PMASynRM. Then finite element method (FEM) is used to compare the electromagnetic performance. Permeability-frozen method is utilized to distinguish basic electromagnetic torque and reluctance torque.

Findings

The PMASynRM can improve the power factor of the SynRM, overcome the drawback of the IPMSM in the high-speed flux-weakening region and is more proper to operate over a wide speed region. The SynRM is mechanically robust for lacking of the permanent magnets, and the PMASynRM can keep similar rotor stress as the SynRM by optimizing the magnets. Assembly of the SynRM is the simplest, and the economic performance of the SynRM and PMASynRM could be much better than the IPMSM which even uses ferrite magnets.

Practical/implications

The SynRM can produce identical torque and efficiency compared with the IPMSM except the poor power factor. The poor power factor could be improved by adopting the PMASynRM, which is proved to be able to act as an alternative of the IPMSM for low-cost high-performance application.

Originality/value

This paper provides the theoretical model of the IPMSM, SynRM and PMASynRM in a unified format. The electromagnetic, mechanical and economic performances of the three kinds of synchronous motors are compared comprehensively. Then, both the advantages and disadvantages are summarized.

Details

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, vol. 35 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 20 November 2009

Xiong‐hui Cai, Bing An, Feng‐shun Wu and Yi‐ping Wu

The purpose of this paper is to accomplish the low cost mass‐production of flexible radio frequency identification (RFID) tag inlays.

Abstract

Purpose

The purpose of this paper is to accomplish the low cost mass‐production of flexible radio frequency identification (RFID) tag inlays.

Design/methodology/approach

An anisotropic conductive paste (ACP) is prepared by mixing uniform micro‐sized spherical conductive particles, latent curing agent and other additives into a thermoset epoxy resin. RFID tag inlays are assembled with the paste through flip‐chip technology. The microstructural analysis of bonded joints, bond strength testing, and high‐temperature and humidity aging testing are employed to evaluate the performance of the inlays.

Findings

It was found that the chips are hard assembled on the antennae by the ACP. Flexible RFID tag inlays assembled using the presented method have good reliability when working under high frequency (13.56 MHz) conditions.

Research limitations/implications

The method presented is a promising new way for packaging flexible RFID tag inlays with ACP. Through the use of flip‐chip technology, large‐scale production is possible with low manufacturing costs.

Originality/value

The paper details a simple way to prepare an anisotropic conductive paste and to assemble flexible RFID tag inlays. The technique uses flip‐chip technology with the paste as the electrical and mechanical interconnection material. It presents a simple and fast method of assembly for flexible RFID tag inlays on a large‐scale with low cost.

Details

Circuit World, vol. 35 no. 4
Type: Research Article
ISSN: 0305-6120

Keywords

Article
Publication date: 7 October 2020

Som Sekhar Bhattacharyya, Surabhi Verma and Gayathri Sampath

Multisided platforms (MSPs) have become omnipresent. Millennial consumers have taken well to MSPs. It has become imperative to explicate the process of adoption of MSPs by…

Abstract

Purpose

Multisided platforms (MSPs) have become omnipresent. Millennial consumers have taken well to MSPs. It has become imperative to explicate the process of adoption of MSPs by millennials. The purpose of this study is to comprehend the factors that lead to the adoption of MSPs by millennials beyond the factors identified in the technology acceptance model (TAM).

Design/methodology/approach

Data was collected from 252 respondents through a structured survey questionnaire to comprehend MSP adoption. Partial least squares structured equation modelling was applied for analysis.

Findings

The theoretical lens of TAM was applied for the study. Results indicated that over and above TAM, millennials’ intention to use of MSPs was moderated by ethical expectations, as well as ethnocentric thinking. The study, thus, extended TAM theoretical conversation by including factors of consumer ethnocentric behaviour and customer ethical considerations.

Research limitations/implications

This study modifies the TAM factors theoretically by including two new factors, namely, customers’ ethical expectations and ethnocentric thinking.

Practical implications

This study results would help MSP firm managers comprehend the importance of consideration of consumer ethnocentric behaviour and customer ethical considerations. Thus, managers have to include in their MSPs’ aspects of customers’ ethical expectations and ethnocentric thinking while marketing their MSPs’ while doing business with millennials.

Originality/value

This was one of the first studies that extended TAM by adding the factors of ethical expectations and ethnocentric thinking in the context of MSP adoption for millennial customers.

Details

International Journal of Ethics and Systems, vol. 36 no. 4
Type: Research Article
ISSN: 2514-9369

Keywords

Article
Publication date: 28 April 2023

Priti Yadav and Anshul Jain

The board of directors of an organization can contribute considerably to the transition to a sustainable global economy by accommodating environmental, social and governance (ESG…

1057

Abstract

Purpose

The board of directors of an organization can contribute considerably to the transition to a sustainable global economy by accommodating environmental, social and governance (ESG) measures in the directors' business model. Along these lines, the purpose of this research is to understand the nexus between the board's structural attributes and sustainability disclosures in an emerging economy such as India.

Design/methodology/approach

The authors investigate this link using the system generalized method of moments (SGMM) panel regression on a sample of firms from the National Stock Exchange (NSE) Nifty 100 Index from 2013 to 2020. This econometric framework controls endogeneity among the variables, which has been a gap in the previous studies.

Findings

The authors find that board structural attributes, like board size, gender diversity, chief executive officer (CEO) duality and independence, have little bearing on sustainability disclosures of Indian companies. However, the board of directors, through the board's company's social responsibility (CSR) committee, strives for sustainability practices in Indian organizations. The authors also find that larger companies are more willing to disclose on ESG efforts than smaller ones, but the financial performance of the smaller ones (as proxied by Tobin's Q) does not matter.

Research limitations/implications

This study is restricted to a sample of large cap listed companies and specific environment, resulting in the non-generalizability of the findings to different contexts because countries vary in their state of economic development, internal policy, regulations and governance.

Practical implications

A mandated CSR committee has helped Indian businesses to publicize their sustainability efforts. Besides the frontrunner in CSR regulations, Indian organizations have paid least attention to the environmental pillar of the ESG framework. Accordingly, the board of directors should put more emphasis on the environmental aspects of their business' sustainability efforts to help achieve sustainable development goals (SDGs) in the medium term and net neutrality in the long term.

Originality/value

From the standpoint of an emerging economy like India, which has statutory CSR mandates for firms, this research adds a fresh perspective on the relationship between corporate governance and corporate responsibility by employing stakeholder theory, which is further substantiated by the use of system GMM as a robust methodology. This study also emphasizes the significance of a mandatory CSR committee as a facilitator of sustainability practices and reporting in emerging economies.

Details

Journal of Applied Accounting Research, vol. 24 no. 5
Type: Research Article
ISSN: 0967-5426

Keywords

Article
Publication date: 20 December 2022

Lucas Liang Wang, Qing Dai and Yan Gao

New venture status is the most prominent feature of entrepreneurial startups, but its performance implications have remained under-studied. This study aims to bridge this…

Abstract

Purpose

New venture status is the most prominent feature of entrepreneurial startups, but its performance implications have remained under-studied. This study aims to bridge this knowledge void and offer precise guidelines for startup managers in boosting performance.

Design/methodology/approach

The study develops and tests a multi-perspective model on the linkage between new venture status and firm performance by integrating I/O economics, resource-based view and dynamic capability perspective. The arguments from the first two perspectives point to an adverse effect of new venture status, which is contingent, respectively, on business differentiation and resource endowments. The third perspective grounds a positive relationship between new venture status and performance, which is more pronounced for firms with weaker dynamic capabilities.

Findings

Quantitative evidence from a sample of new and established firms in China shows that the direct effect of new venture status is negative but insignificant. Neither business differentiation nor dynamic capabilities moderate the relationship. Low resource endowments, however, reinforce the negative influence of new venture status. New venture status, thus, shapes firm performance through resource scarcity from resource-based view rather than competitive vulnerability from I/O economics or strategic flexibility from dynamic capability perspective.

Originality/value

Newness and new venture performance have both been extensively examined in literature. But the relationship between them has remained largely omitted. The multi-perspective model and the findings in this study help clarify the confusion as to whether newness is good or bad in the context of an emerging market and reveals the subtle mechanism the effect of newness unfolds.

Details

International Journal of Entrepreneurial Behavior & Research, vol. 29 no. 3
Type: Research Article
ISSN: 1355-2554

Keywords

Article
Publication date: 6 August 2018

Zenu Sharma and Liang Song

The purpose of this paper is to examine corporate social responsibility (CSR) practices of SIN firms. SIN firms are firms from controversial sectors such as tobacco, alcohol…

1184

Abstract

Purpose

The purpose of this paper is to examine corporate social responsibility (CSR) practices of SIN firms. SIN firms are firms from controversial sectors such as tobacco, alcohol, gambling and firearms.

Design/methodology/approach

This paper explains contrasts CSR practices of SIN firms with similar size and industry non-SIN counterparts.

Findings

This paper shows that SIN firms conduct more CSR practices than non-SIN firms. This paper also finds that CSR practices of SIN firms are value relevant only when these firms are performing below their peers.

Originality/value

The motivation for SIN firms to engage in higher CSR is the competitive advantage hypothesis and not moral rebalancing.

Details

Asian Review of Accounting, vol. 26 no. 3
Type: Research Article
ISSN: 1321-7348

Keywords

Article
Publication date: 13 October 2022

Shun Ye, Sut Ieng Lei, Xiaoyou Zhao, Lin Zhu and Rob Law

With the rapid development of sharing economy, travelers are facing choices between conventional hotels and the peer-to-peer sharing accommodation in urban tourism. The purpose of…

Abstract

Purpose

With the rapid development of sharing economy, travelers are facing choices between conventional hotels and the peer-to-peer sharing accommodation in urban tourism. The purpose of this study is to examine how travelers form their preferences in such choice situations and whether/how their preference formation mode would change with the COVID-19 pandemic.

Design/methodology/approach

A relative preference model was constructed and estimated for both domestic and outbound tourists, based on two waves of survey data collected before and after the COVID-19. The results of this study were compared to derive the evolution of preference formation patterns.

Findings

A set of 15 key value attributes and personal traits was identified, together with their differential effects with the pandemic. Their divergent effects between domestic and outbound trips were also delineated. Based on these findings, the competitive edges and advantageous market profiles were depicted for both hotel and sharing accommodation sectors.

Originality/value

This study contributes to the knowledge of tourists’ preference between accommodation types and adds empirical evidences to the impact of the pandemic on tourist behavior patterns. Both hotel and sharing accommodation practitioners can benefit from the findings to enhance their competitiveness.

Details

International Journal of Contemporary Hospitality Management, vol. 35 no. 4
Type: Research Article
ISSN: 0959-6119

Keywords

Open Access
Article
Publication date: 10 May 2021

Guan-Yu Lin, Yi-Shun Wang, Yu-Min Wang and Meng-Hsuan Lee

The study aims to examine the relationships among personality traits (i.e. the Big Five personality traits and locus of control), self-perceived facial attractiveness, motivations…

7855

Abstract

Purpose

The study aims to examine the relationships among personality traits (i.e. the Big Five personality traits and locus of control), self-perceived facial attractiveness, motivations (i.e. intrinsic and extrinsic motivation) and intention toward live stream broadcasting. It also investigates the moderating role of perceived behavioral control in the relationship between motivations and intention.

Design/methodology/approach

Data collected from a sample of 637 participants are used to examine the research model and test the hypotheses with the employment of partial least squares structural equation modeling.

Findings

The study shows that motivations and perceived behavioral control are significant predictors of intention. Perceived behavioral control has a significant moderating effect between motivations and intention. Intrinsic motivation is positively influenced by self-perceived facial attractiveness, agreeableness, extraversion and internal locus of control, while extrinsic motivation is positively predicted by self-perceived facial attractiveness, conscientiousness and extraversion.

Originality/value

This study enhances our understanding of the determinants of intention toward live stream broadcasting by exploring its relationships with motivations, self-perceived facial attractiveness and personality, as well as the moderating effects of perceived behavioral control.

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