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Article
Publication date: 28 April 2020

Lei Hong, Baosheng Wang, XiaoLan Yang, Yuguo Wang and Zhong Lin

The purpose of this paper is to present a robotic off-line programming method for freeform surface grinding based on visualization toolkit (VTK). Nowadays, manual grinding and…

279

Abstract

Purpose

The purpose of this paper is to present a robotic off-line programming method for freeform surface grinding based on visualization toolkit (VTK). Nowadays, manual grinding and traditional robot on-line programming are difficult to ensure the surface grinding accuracy, thus off-line programming is gradually used in grinding, however, several problems are needed to be resolved which include: off-programming environment depends on the third-party CAD software, leads to insufficient self-development flexibility; single support for robot type or workpiece model format contributes to lack of versatility; grinding point data depends on external data calculation and import process, causes human-computer interaction deterioration.

Design/methodology/approach

In this method, the visualization pipeline and observer/command mode of VTK are used to display the 3D model of the robot grinding system and pick up the workpiece surfaces to be grinded respectively. Two groups of cutter planes with equidistant spacing are created to form the grinding nodes on the surface, and the extraction method for the position and posture of the nodes is proposed. Furthermore, the position and posture of discretized points along the grinding curve are obtained by B-spline curve interpolation and quaternion spherical linear interpolation respectively. Finally, the motion simulation is realized by robot inverse kinematics.

Findings

Through a watch case grinding experiment, the results show that the proposed method based on VTK can achieving high precision grinding effect, which is obviously better than traditional method.

Originality/value

The proposed method is universal which does not depend on the specific forms of surface, and all calculations in simulation are completed within the system, avoiding tedious external data calculation and import process. The grinding trajectory can be generated only by the mouse picking operation without relying on the other third-party CAD software.

Details

Industrial Robot: the international journal of robotics research and application, vol. 47 no. 4
Type: Research Article
ISSN: 0143-991X

Keywords

Available. Open Access. Open Access
Article
Publication date: 6 July 2023

Hong-Lei Mu, Jiang Xu and Sijing Chen

The main purposes of this research are: first of all, to re-classify the types of corporate social responsibility (CSR) into primary stakeholder-oriented CSR and secondary…

8895

Abstract

Purpose

The main purposes of this research are: first of all, to re-classify the types of corporate social responsibility (CSR) into primary stakeholder-oriented CSR and secondary stakeholder-oriented CSR from the perspective of stakeholders and, second, to investigate empirically how and which types of CSR can better impact employees' job satisfaction and happiness management.

Design/methodology/approach

An online self-administered questionnaire was adopted to test the conceptual model. Questionnaires were sent to Chinese employees and restrict the data to those whose companies had experience implementing CSR. The study employed the partial least squares structural equation modeling (PLS-SEM) technique for data analysis using SmartPLS 4.0 software.

Findings

For factors of happiness management, both primary stakeholder-oriented CSR and secondary stakeholder-oriented CSR had significant and positive effects on happiness management. In addition, both primary and secondary stakeholder-oriented CSR positively and significantly affected job satisfaction, with primary stakeholder-oriented CSR way larger than secondary stakeholder-oriented CSR. Job satisfaction, in turn, was positively and significantly associated with happiness management. The results showed that the control variables of gender and education background had significant effects on happiness management.

Practical implications

First, the results provide useful empirical evidence in support of the feasibility that firms could develop competitive and sustainable development strategies by paying more attention to CSR practices. In terms of the primary stakeholder-oriented CSR, managers are recommended to put employees' benefits as a priority and invest in the to offer a healthy and safe working environment or employee support programs. In terms of the secondary stakeholder-oriented CSR, managers are suggested to denote parts of earnings to charity and to people in need. Second, in order to create job satisfaction, firms should put a stronger emphasis on CSR practices. When considering job satisfaction, managers should treat their employees in a socially responsible way and fulfill their demands and rights and place this at the core of their CSR activities.

Originality/value

First, this study makes a contribution to the existing literature by classifying the four important CSR practices into two types from the perspective of stakeholder theory. By incorporating a series of CSR practices and the stakeholder theory, this study provides a comprehensive and reasonable CSR classification, which has not been considered by prior research. Second, this study adds to the literature by defining the construct of happiness management explicitly along with identifying the dimensions of happiness management. Third, to the best of the authors' knowledge, this is one of the first studies exploring the relationship between CSR and happiness management. Finally, this study is among the first to investigate the correlation between job satisfaction and happiness management.

Details

Management Decision, vol. 62 no. 2
Type: Research Article
ISSN: 0025-1747

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Article
Publication date: 20 January 2021

Shifu Chen, Hong Lei, Meng Wang, Changyou Ding, Weixue Dou and Lishan Chang

The reported mathematical models of gas–liquid flow in single snorkel Rheinstahl–Heraeus (SSRH) are based on the assumption of steady Ar-molten steel flow. The purpose of this…

207

Abstract

Purpose

The reported mathematical models of gas–liquid flow in single snorkel Rheinstahl–Heraeus (SSRH) are based on the assumption of steady Ar-molten steel flow. The purpose of this paper is to develop a mathematical model to describe the unsteady turbulent flow (CO-Ar-molten steel) with nonequilibrium decarburization reaction.

Design/methodology/approach

On the base of the finite volume method, the computational fluid dynamics software CFX is used to predict the unsteady fluid flow, the spatial distributions of CO/argon gas and carbon element. The water model experiment and the industrial experiment are carried out to verify the mathematical models.

Findings

A two-way coupling model (T-WCM) based on algebraic slip model is developed to investigate the coupling phenomena. The related results show that T-WCM is more rigorous and accurate than one-way coupling model in predicting carbon content of molten steel. The amount of CO gas, which can enhance turbulent flow and mass transfer, is about three times the argon gas blown into SSRH.

Originality/value

CO gas is the key factor in investigating the transport phenomena. This study fully reveals the truth about the unsteady gas-liquid flow in SSRH. It is necessary to adopt T-WCM based on algebraic slip model to describe the CO-Ar-molten steel flow phenomenon.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 31 no. 8
Type: Research Article
ISSN: 0961-5539

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Article
Publication date: 17 January 2022

Hong-Lei Mu and Young-Chan Lee

The objective of this study is twofold: first, to investigate the determinants of customers' switching intention from traditional payments to proximity mobile payments (PMPs…

1272

Abstract

Purpose

The objective of this study is twofold: first, to investigate the determinants of customers' switching intention from traditional payments to proximity mobile payments (PMPs) during the COVID-19 pandemic for specific insight on how these factors shape customers' switching intentions; second, this study discusses the relationship between traditional payments and PMP services.

Design/methodology/approach

The study data were collected from individual customers who used both traditional payments and PMP in a physical store during the COVID-19 pandemic. Structural equation modeling (SEM) was applied to analyze the validity of the variables and the causal relationships among variables based on 305 valid data.

Findings

The results show that the factor of traditional payments, that is, dissatisfaction positively and significantly influenced customers' switching intention. Factors of PMP, namely perceived usefulness (PUF) and perceived ease of use (EOU), positively and significantly impacted switching intention. In addition, the relationship between traditional payments and PMP, that is, low perceived substitutability was found to negatively influence switching intention, PUF and EOU.

Research limitations/implications

First, the study targets are customers with experience in using PMP after the COVID-19 pandemic. It is suggested to compare customers who had experience using PMP before and after the COVID-19 pandemic. Second, although cash and bank cards belong to the category of traditional payments, they have different degrees of contact when transactions occur. The contact rate of bank cards is lower than that of cash. This study did not differentiate between cash and bank cards, which is the main limitation.

Originality/value

First, this study provides a reference to examine mobile payment usage from the perspective of both incumbent and alternative services conjointly under emergency situations, especially during the COVID-19 pandemic. Second, the application of migration theory to the context of mobile payment extends existing research on mobile payment. Third, this study is among the first to investigate the relationship between traditional payments and PMP.

Details

International Journal of Bank Marketing, vol. 40 no. 5
Type: Research Article
ISSN: 0265-2323

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Article
Publication date: 17 November 2021

Xu Jia, Yang Ou Xiang, Hu Yuan Pei and Song Wei

The investigations could guide the structural design and fatigue life prediction of air-conditioning compressor valve plates.

186

Abstract

Purpose

The investigations could guide the structural design and fatigue life prediction of air-conditioning compressor valve plates.

Design/methodology/approach

The High-Cycle Fatigue (HCF) and Very-High-Cycle Fatigue (VHCF) behaviors of stainless steel used for air-conditioning compressor valve plates were investigated. Monotonic and cyclic loading conditions were designed to explore the fatigue responses according to the load characteristics of the structure.

Findings

The crack initiation can be observed as the arc-shaped cracks at both sides of specimens and Y-shaped crack bifurcation in the specimens. Moreover, the middle section and the cracks at both ends are not connected to the surface of the specimen. The stress-life results of the materials under two directions (vertical and horizontal) were provided to examine the difference in fatigue strength.

Originality/value

Monotonic and cyclic loading conditions were designed to explore the fatigue responses according to the load characteristics of the structure. Based on the experimental data, the results indicate that specimens under cyclic loading conditions could demonstrate better mechanical performance than static loadings.

Details

International Journal of Structural Integrity, vol. 13 no. 2
Type: Research Article
ISSN: 1757-9864

Keywords

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Article
Publication date: 23 June 2022

Tin Nok Leung, Yin Ming Hui, Canon K.L. Luk, Dickson K.W. Chiu and Kevin K.W. Ho

This study analyses the advantages and weaknesses of using Facebook to aid the learning of Japanese as a foreign language.

261

Abstract

Purpose

This study analyses the advantages and weaknesses of using Facebook to aid the learning of Japanese as a foreign language.

Design/methodology/approach

A questionnaire survey was conducted to collect data from 100 Hong Kong Japanese language learners (who are generally fluent in Chinese and English), ranging from total amateur to advanced learners (Japanese Language Proficiency Test (JLPT) qualified at different levels).

Findings

The authors' results suggest that the advantages of using Facebook to help learn Japanese include: (1) serving as a free-of-charge, casual, and convenient learning platform; (2) enriching learners' knowledge beyond the language learning and (3) encouraging interactive and collaborative learning with other users for practicing the language. However, the low credibility and unstructured educational materials posted on Facebook and being easily distracted by other Facebook feeds are the major weaknesses of learning a language through Facebook. Furthermore, the authors' result shows that Facebook is especially effective for Japanese learning when learners fall into either one of the following groups: young, female, or intermediate (N2/3) learners.

Originality/value

Scant studies focus on the aid of learning Japanese via Facebook, especially Hong Kong learners' perceptions, or generally in the East. Therefore, this study aims to fill this research gap. The authors' findings will facilitate the students, teachers, and language institutions from Hong Kong and other countries to improve the students' effectiveness in learning and teaching Japanese.

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Article
Publication date: 13 April 2023

Md Jahidur Rahman, Hongtao Zhu and Md Moazzem Hossain

From an agency perspective, the authors investigate whether family ownership and control configurations are systematically associated with a firm's choice of auditor and audit…

548

Abstract

Purpose

From an agency perspective, the authors investigate whether family ownership and control configurations are systematically associated with a firm's choice of auditor and audit fees. Agency theory is an economic theory that purposes the existence of a contract between two parties, principals and agents. Auditor choice and audit fees by family firms provide interesting insights given the unique nature of the agency problems faced by such firms.

Design/methodology/approach

The authors employ Big-4 auditors (PWC, KPMG, E&Y and Deloitte) as a proxy for high quality auditor (Big N) for the auditor choice model. For the audit fee model, the dependent variable is the natural logarithm of audit fees (LnAF). The authors use two measures for family firm as explanatory variables: (1) a dummy variable (FAM_Control), which equals one if the firm is classified as a family firm and (2) FAM_Ownership, which is an indicator variable with a value of one if a firm has family members who hold CEO position, occupy board seats, or hold at least 10% of the firm's equity. Data of Chinese listed firms from 2011 to 2021 are used. The authors adopt the Heckman (1979) two-stage model to mitigate the potential endogeneity issue involved in the selection of Big-N auditors.

Findings

The findings suggest that compared with non-family firms, Chinese family firms have a less tendency to employ Big-4 auditors due to less severe agency problems between owners and managers. Additionally, Chinese family firms sustain higher audit fees than non-family firms. Similar to the prior literature, however, Chinese family firms audited by Big-4 auditors incur lower audit fees than family firms audited by non-Big-4 auditors in this study. In contrast to young-family firms, old-family firms are less likely to pick top-tier auditors and sustain lower audit fees. Consistent and robust results are found from endogeneity tests and sensitivity analyses.

Originality/value

The empirical evidence provides a unique insight, for accounting practitioners, policymakers, family owners and other capital market participants concerning the diverse effects of various family ownership and control features on selecting high-quality auditors and audit fees. This study advances the understanding, showing that a lower demand for audit quality occurs in Chinese family firms as they encounter less severe Type I agency problems. However, the more severe Type II agency problems in Chinese family firms sustain higher audit fees due to higher audit risk and greater audit effort.

Details

Journal of Family Business Management, vol. 13 no. 4
Type: Research Article
ISSN: 2043-6238

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Article
Publication date: 3 May 2016

Hoi Kam Quinnci Wong, Elana Chan, Tak Ming Charles Chan, Yung Li and Ming Ki Henry Wan

This paper aims to examine the forms and experiences of victimization of foreign domestic helpers (FDHs) in Hong Kong, the effects of victimization on FDHs and FDHs’ coping…

487

Abstract

Purpose

This paper aims to examine the forms and experiences of victimization of foreign domestic helpers (FDHs) in Hong Kong, the effects of victimization on FDHs and FDHs’ coping strategies.

Design/methodology/approach

The main findings are based on semi-structured interviews with a sample of 12 FDHs in Hong Kong.

Findings

The findings uncovered a continuum of violence ranging from relatively mundane abuses on an everyday basis to acute events at the time of termination. Some respondents also experienced secondary victimization from police and/or pending criminal justice proceedings after contract termination.

Research limitations/implications

Victimization exerted significant adverse physical and psychological effects on FDHs in our study. Nevertheless, contrary to common assumptions about FDHs as passive victims, our findings suggest that some FDHs experienced a degree of empowerment, as they found ways to cope with their difficulties by individualized and social strategies depending on the degree of victimization and the resources available.

Originality/value

The findings suggest there is an urgent need to review the existing laws and policies that, at best, are ineffective and, at worst, create far more problems than they solve.

Details

Social Transformations in Chinese Societies, vol. 12 no. 1
Type: Research Article
ISSN: 1871-2673

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Article
Publication date: 1 April 2014

Helen X.H. Bao, John L. Glascock, Sherry Z. Zhou and Lei Feng

In this research, the purpose of this paper is to assess the relative pricing behavior for land in Beijing, China. The paper sees this as important for three core reasons. First…

915

Abstract

Purpose

In this research, the purpose of this paper is to assess the relative pricing behavior for land in Beijing, China. The paper sees this as important for three core reasons. First, China has a strong growth economy but is still in many ways an undeveloped country and thus the paper do not have significant data about asset pricing behavior there. Second, China has not traditionally had a market-based land and property transfer system – thus, it is interesting to assess how prices are determined relative to typical market expectations. Third, the authors have extensive evidence on pricing behavior in the USA and Europe but little such evidence on China – are the same variables important in land pricing in China and are there other unique local variables.

Design/methodology/approach

This paper analyzes prices of non-industrial and industrial land separately using a comprehensive data set and a semi-parametric framework. The data and flexible model specification allow the hedonic price coefficients to be estimated more accurately.

Findings

The key results are that pricing behavior in general follows the traditional expected variables as determined by size, planning use, location and other neighborhood characteristics. However, the authors also find that land prices are associated with buyer characteristics; for example, foreign investors pay less than local investors.

Originality/value

The study fills the gap in the literature in two ways. First, this paper analyzes prices of non-industrial and industrial land separately using a comprehensive data set and a semi-parametric framework. The data and flexible model specification allow the hedonic price coefficients to be estimated more accurately. Second, and more importantly, the authors find evidences that land prices in China are determined by both market force and “Chinese characteristics.” The land market, although established only recently, is at work. In line with the literature, determinants such as size and planning uses are found to be important in determining land prices.

Details

International Journal of Managerial Finance, vol. 10 no. 2
Type: Research Article
ISSN: 1743-9132

Keywords

Available. Open Access. Open Access
Article
Publication date: 31 October 2023

Hongping Xing, Yu Liu and Xiaodan Sun

The smoothness of the high-speed railway (HSR) on the bridge may exceed the allowable standard when an earthquake causes vibrations for HSR bridges, which may threaten the safety…

354

Abstract

Purpose

The smoothness of the high-speed railway (HSR) on the bridge may exceed the allowable standard when an earthquake causes vibrations for HSR bridges, which may threaten the safety of running trains. Indeed, few studies have evaluated the exceeding probability of rail displacement exceeding the allowable standard. The purposes of this article are to provide a method for investigating the exceeding probability of the rail displacement of HSRs under seismic excitation and to calculate the exceeding probability.

Design/methodology/approach

In order to investigate the exceeding probability of the rail displacement under different seismic excitations, the workflow of analyzing the smoothness of the rail based on incremental dynamic analysis (IDA) is proposed, and the intensity measure and limit state for the exceeding probability analysis of HSRs are defined. Then a finite element model (FEM) of an assumed HSR track-bridge system is constructed, which comprises a five-span simply-supported girder bridge supporting a finite length CRTS II ballastless track. Under different seismic excitations, the seismic displacement response of the rail is calculated; the character of the rail displacement is analyzed; and the exceeding probability of the rail vertical displacement exceeding the allowable standard (2mm) is investigated.

Findings

The results show that: (1) The bridge-abutment joint position may form a step-like under seismic excitation, threatening the running safety of high-speed trains under seismic excitations, and the rail displacements at mid-span positions are bigger than that at other positions on the bridge. (2) The exceeding probability of rail displacement is up to about 44% when PGA = 0.01g, which is the level-five risk probability and can be described as 'very likely to happen'. (3) The exceeding probability of the rail at the mid-span positions is bigger than that above other positions of the bridge, and the mid-span positions of the track-bridge system above the bridge may be the most hazardous area for the running safety of trains under seismic excitation when high-speed trains run on bridges.

Originality/value

The work extends the seismic hazardous analysis of HSRs and would lead to a better understanding of the exceeding probability for the rail of HSRs under seismic excitations and better references for the alert of the HSR operation.

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