Search results

1 – 10 of over 16000
Article
Publication date: 7 November 2019

Hanyang Ma, Zheming Liu, Saixing Zeng, Han Lin and Vivian W.Y. Tam

Since megaproject social responsibility (MSR) has received increasing attention in megaproject management and plays critical roles in megaproject practices, the purpose of…

Abstract

Purpose

Since megaproject social responsibility (MSR) has received increasing attention in megaproject management and plays critical roles in megaproject practices, the purpose of this paper is to explore how MSR facilitates an improved sustainability of the construction industry.

Design/methodology/approach

By integrating multiple theoretical perspectives of transaction cost theory, institutionalism and attention- and resource-based views, and by using survey data of Chinese megaprojects and construction enterprises, this paper offers a theoretical elaboration of and an empirical investigation into the impacts that MSR’s four dimensions exert on industrial improvement in economic sustainability and social responsibility.

Findings

The study’s empirical results indicate that MSR has positive impacts on improving the sustainability of the construction industry, and that such positive impacts are weakened by the interactions of primary stakeholders in the megaprojects but are strengthened by the interactions of secondary stakeholders.

Practical implications

This paper suggests that managers and policymakers make efforts to governmental guidance, media monitoring and public participation in megaprojects, so as to limit the potential unethical behaviors in megaproject management and enhance the sociopolitical legitimacy that are essential for the sustainability of the construction industry.

Originality/value

By analyzing the industrial outcomes of MSR, this paper extends studies on the topic beyond the current literature’s focus on the antecedents of MSR, and it enriches the research on MSR stakeholders by elaborating on the contingent roles of the various stakeholders in megaproject management.

Details

Engineering, Construction and Architectural Management, vol. 27 no. 4
Type: Research Article
ISSN: 0969-9988

Keywords

Article
Publication date: 12 August 2022

Isaac Chukwuemezu Okereke, Mohammed S. Ismail, Derek Ingham, Kevin J. Hughes, Lin Ma and Mohamed Pourkashanian

This paper aims to numerically investigate the impact of gas diffusion layer (GDL) anisotropic transport properties on the overall and local performance of polymer…

54

Abstract

Purpose

This paper aims to numerically investigate the impact of gas diffusion layer (GDL) anisotropic transport properties on the overall and local performance of polymer electrolyte fuel cells (PEFCs).

Design/methodology/approach

A three-dimensional numerical model of a polymer electrolyte fuel cell with a single straight channel has been developed to investigate the sensitivity of the fuel cell performance to the GDL anisotropic transport properties – gas permeability, diffusivity, thermal conductivity and electrical conductivity. Realistic experimentally estimated GDL transport properties were incorporated into the developed PEFC model, and a parametric study was performed to show the effect of these properties on fuel cell performance and the distribution of the key variables of current density and oxygen concentration within the cathode GDL.

Findings

The results showed that the anisotropy of the GDL must be captured to avoid overestimation/underestimation of the performance of the modelled fuel cell. The results also showed that the fuel cell performance and the distributions of current density and oxygen mass fraction within the cathode GDL are highly sensitive to the through-plane electrical conductivity of the GDL and, to a lesser extent, the through-plane diffusivity, and the thermal conductivity of the GDL. The fuel cell performance is almost insensitive to the gas permeability of the GDL.

Practical implications

This study improves the understanding of the importance of the GDL anisotropy in the modelling of fuel cells and provides useful insights on improving the efficiency of the fuel cells.

Originality/value

Realistic experimentally estimated GDL transport properties have been incorporated into the PEFC model for the first time, allowing for more accurate prediction of the PEFC performance.

Details

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

Keywords

Article
Publication date: 10 July 2019

Zhenxiao Chen, Derek Ingham, Mohammed Ismail, Lin Ma, Kevin J. Hughes and Mohamed Pourkashanian

The purpose of this paper is to investigate the effects of hydrogen humidity on the performance of air-breathing proton exchange membrane (PEM) fuel cells.

Abstract

Purpose

The purpose of this paper is to investigate the effects of hydrogen humidity on the performance of air-breathing proton exchange membrane (PEM) fuel cells.

Design/methodology/approach

An efficient mathematical model for air-breathing PEM fuel cells has been built in MATLAB. The sensitivity of the fuel cell performance to the heat transfer coefficient is investigated first. The effect of hydrogen humidity is also studied. In addition, under different hydrogen humidities, the most appropriate thickness of the gas diffusion layer (GDL) is investigated.

Findings

The heat transfer coefficient dictates the performance limiting mode of the air-breathing PEM fuel cell, the modelled air-breathing fuel cell is limited by the dry-out of the membrane at high current densities. The performance of the fuel cell is mainly influenced by the hydrogen humidity. Besides, an optimal cathode GDL and relatively thinner anode GDL are favoured to achieve a good performance of the fuel cell.

Practical implications

The current study improves the understanding of the effect of the hydrogen humidity in air-breathing fuel cells and this new model can be used to investigate different component properties in real designs.

Originality/value

The hydrogen relative humidity and the GDL thickness can be controlled to improve the performance of air-breathing fuel cells.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 30 no. 4
Type: Research Article
ISSN: 0961-5539

Keywords

Article
Publication date: 22 November 2018

Xiongfeng Pan, Ma Lin Song, Jing Zhang and Guangyou Zhou

This paper aims to identify the influence of innovation network and technological learning on innovation performance of high-tech cluster enterprises.

1136

Abstract

Purpose

This paper aims to identify the influence of innovation network and technological learning on innovation performance of high-tech cluster enterprises.

Design/methodology/approach

Using a questionnaire, data are collected from Dalian High-tech Industrial park in China. In addition, structural equation model is used to identify the influence of innovation network and technological learning on the innovation performance of high-tech cluster enterprise.

Findings

The findings of this study show that the centrality of network location and the strength of the network relationship have a direct positive effect on technology acquisition, technology digestion and technology exploit of high-tech cluster enterprises. Meanwhile, technology acquisition has a direct positive effect on technology digestion, technology digestion has a direct positive effect technology exploit, and technology exploit has a direct positive effect innovation performance of high-tech cluster enterprises.

Practical implications

To improve innovation performance, high-tech cluster enterprises should not only nurture and optimize innovation networks but also improve technological learning ability.

Originality/value

This paper empirically supports the significant influence of innovation network and technological learning on innovation performance. While the results provide guidance for researchers and practitioners, it also adds value to innovation-related research.

Details

Journal of Knowledge Management, vol. 23 no. 9
Type: Research Article
ISSN: 1367-3270

Keywords

Article
Publication date: 24 January 2020

Xiujuan Tian, Manhua Wu, Lin Ma and Ning Wang

The purpose of this paper is to empirically investigate the effect of rural finance on industrial integration of rural primary, secondary and tertiary industries.

Abstract

Purpose

The purpose of this paper is to empirically investigate the effect of rural finance on industrial integration of rural primary, secondary and tertiary industries.

Design/methodology/approach

Using household-level data collected by Third National Agricultural Census and the provincial-level data collected from Wind database, the authors estimated the impacts of rural finance on rural industrial integration using Logit and Probit regression models. Further, the authors examined how the effect of rural finance varies with the age and education of householders, and with household and provincial characteristics by investigating the moderating effect.

Findings

The findings show that rural finance has a significant and positive effect on promoting farmers’ participation in new agricultural management organizations. This effect is more obvious in families whose householders are 40–50 years old, or families that have more educated members. This is because the middle-aged or educated people are more willing to accept and take part in industrial integration. The results further indicate that rural finance has a greater effect on industrial integration in provinces with a high degree of marketization, and in provinces with the high output value of industries and services in agricultural intermediate input.

Originality/value

The authors investigated the impact of rural finance on rural industrial integration empirically, and this topic is rarely covered before. The findings of this study also enrich the literature on financial development and economic growth as well as provide policy suggestions on how to promote rural industrial integration.

Details

China Agricultural Economic Review, vol. 12 no. 2
Type: Research Article
ISSN: 1756-137X

Keywords

Article
Publication date: 1 April 1987

YONGHAO MA and YI LIN

The concept of harmonic systems is introduced from a standpoint of a model of general systems. Systems might be compatible in some respects and incompatible in others;…

Abstract

The concept of harmonic systems is introduced from a standpoint of a model of general systems. Systems might be compatible in some respects and incompatible in others; this depends on the purpose for which the systems are introduced as well as the environmental factors. Two fundamental principles are given in different optimal situations with respect to a given environment. Some tests of applications are discussed. Moreover, one kind of an invariant harmonic systems principle is proved.

Details

Kybernetes, vol. 16 no. 4
Type: Research Article
ISSN: 0368-492X

Keywords

Book part
Publication date: 19 June 2019

Hassaan Tariq, Faisal Shahzad, Asim Anwar and Ijaz Ur Rehman

This study investigates the impact of insider-ownership of publicly traded firms on their performance, cost of debt (COD) and cost of equity. We use a sample of 104…

Abstract

This study investigates the impact of insider-ownership of publicly traded firms on their performance, cost of debt (COD) and cost of equity. We use a sample of 104 non-finance listed companies of Pakistan for the period from 2006 to 2016. Our study is conducted in Pakistan as a developing country in which insider-ownership is dominant, and a weak external corporate governance mechanism increases the payoffs from insider-ownership. We use feasible generalized least square (FGLS) regression methods to examine these hypotheses. Based on agency theory, we find that insider-ownership enhances firm performance. Furthermore, our results show that insider-ownership reduced the COD and equity. Higher ownership decreases the opportunistic behavior of insiders. It also reduces the creditor’s perception of the likelihood of default on loan payments and reduces agency issues among shareholders. The insider will invest in positive NPV projects which will help maximize shareholders’ wealth and minimize the COD. Similarly, the relationship between insider-ownership and cost of equity is significant but negative. Supporting the convergence of interest increase in ownership helps in aligning the goals of managers and stakeholders whereby the insider will focus on value creation by minimizing equity cost.

Details

Asia-Pacific Contemporary Finance and Development
Type: Book
ISBN: 978-1-78973-273-3

Keywords

Book part
Publication date: 8 November 2021

Kanokporn Intharak, Surachai Chancharat and Jakkrich Jearviriyaboonya

Empirical evidence shows that banking development has a significant impact on macro-level economic growth through the finance-growth nexus and also highlights the…

Abstract

Empirical evidence shows that banking development has a significant impact on macro-level economic growth through the finance-growth nexus and also highlights the prominent effect of development on local economy and household welfare, particularly in developing countries with restricted access to financial systems. The authors investigated the role of local banking development in affecting household welfare in Thailand which is a modest degree of financial access compare to other countries. The authors focus on the development of the banking sector in four dimensions, including financial depth, financial stability, financial efficiency and financial inclusion, and its impact on household welfare using the generalized method of moments approach to address the endogeneity problem. The authors employ biennial household welfare data from the National Statistical Office survey from 2007 to 2019 which covers all provinces in Thailand. The findings suggest that each type of banking development significantly affects household income and consumption in Thailand, although in different ways. Financial depth decreases income and consumption expenditure, while financial inclusion increases income and consumption expenditure (level effect). However, there are insignificant impacts on volatility of household income and consumption (volatility effect). Our findings prove that the implementation of policies to promote banking development either promote or decrease household welfare. This study can provide insight on policy impact and assist policymakers in considering the adoption of banking development policies to promote growth of the local economy, while at the same time aiming to reduce welfare inequality.

Details

Environmental, Social, and Governance Perspectives on Economic Development in Asia
Type: Book
ISBN: 978-1-80117-594-4

Keywords

Article
Publication date: 1 June 2022

Lin Ma and Asheq Rahman

This paper aims to examine the influence of culture on the adoption and use of social media platforms for corporate disclosures by firms in a cross-country setting.

Abstract

Purpose

This paper aims to examine the influence of culture on the adoption and use of social media platforms for corporate disclosures by firms in a cross-country setting.

Design/methodology/approach

It is contended that social media corporate disclosure (SMCD) is culturally influenced because the primary purpose of social media is to connect people in social settings, and social settings are distinguished by their cultures. Using a sample of 1,420 firms from 36 countries and Hofstede’s cultural dimensions, this study examines the direct effects of culture on SMCD and its moderating effects on the relationship between SMCD and the agency determinants of corporate disclosure.

Findings

It is found that cultural dimensions directly affect the adoption and use of SMCD. Additionally, the agency determinants of disclosure, size, leverage and growth are positively associated with the adoption, and use of SMCD, and these associations are moderated by the cultural dimensions.

Research limitations/implications

The Hofstede cultural dimensions are broad country-level variables based on the culture of the majority in the population. However, larger countries have many cultures. This study does not cover within-country cultural effects on SMCD. It also does not cover firm-level culture and accounting culture because these factors are derived from national culture. This study adds culture as a country-level determinant of why companies adopt and use social media.

Practical implications

The study provides investors and policymakers with an understanding of the nature of SMCD adoption and use in different cultural settings. It also makes managers aware of which cultural settings are more amenable to SMCD.

Social implications

Social media, by design, have social implications. Examining the role of culture in the use of social media provides societal reasons for the use of SMCD by companies.

Originality/value

Since social media are interactive in form rather than simply one-way disclosure devices, this study goes beyond the realm of corporate disclosure into the less researched area of corporate communication via social media.

Details

Pacific Accounting Review, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0114-0582

Keywords

Article
Publication date: 9 October 2017

Lin Ma, Baiyin Yang, Xueli Wang and Yan Li

The purpose of this paper is to explore the dimensionality of intragroup conflict and to develop an instrument with acceptable psychometric properties for the…

1948

Abstract

Purpose

The purpose of this paper is to explore the dimensionality of intragroup conflict and to develop an instrument with acceptable psychometric properties for the comprehensive measurement of conflict.

Design/methodology/approach

This paper strictly follows the standard scale-developing method: first, establish theoretical dimensions of intragroup conflict; then, develop the initial scale through in-depth interviews and coding schemes; third, revise and verify the scale through exploratory factor analysis and confirmatory factor analysis; and, finally, examine the predictive validity of the new intragroup conflict scale.

Findings

This study identifies four dimensions of intragroup conflict – cognitive conflict, affective conflict, behavioral conflict, and interest-based conflict – and provides evidence of construct validity for a new measure. The results show that cognitive and interest-based conflict affect group innovation performance positively, whereas affective and behavioral conflict affects it negatively.

Originality/value

This study first detects interest-based conflict as a new dimension and explores a more comprehensive scale (ABCI) that reflects all the connotations of conflict, which deepens the understanding of intragroup conflict, laying a solid foundation for empirical studies of conflict.

Details

International Journal of Conflict Management, vol. 28 no. 5
Type: Research Article
ISSN: 1044-4068

Keywords

1 – 10 of over 16000