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Open Access
Article
Publication date: 26 May 2023

Liyun Zeng, Rita Yi Man Li, Huiling Zeng and Lingxi Song

Global climate change speeds up ice melting and increases flooding incidents. China launched a sponge city policy as a holistic nature-based solution combined with urban planning…

2002

Abstract

Purpose

Global climate change speeds up ice melting and increases flooding incidents. China launched a sponge city policy as a holistic nature-based solution combined with urban planning and development to address flooding due to climate change. Using Weibo analytics, this paper aims to study public perceptions of sponge city.

Design/methodology/approach

This study collected 53,586 sponge city contents from Sina Weibo via Python. Various artificial intelligence tools, such as CX Data Science of Simply Sentiment, KH Coder and Tableau, were applied in the study.

Findings

76.8% of public opinion on sponge city were positive, confirming its positive contribution to flooding management and city branding. 17 out of 31 pilot sponge cities recorded the largest number of sponge cities related posts. Other cities with more Weibo posts suffered from rainwater and flooding hazards, such as Xi'an and Zhengzhou.

Originality/value

To the best of the authors’ knowledge, this study is the first to explore the public perception of sponge city in Sina Weibo.

Details

International Journal of Climate Change Strategies and Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1756-8692

Keywords

Article
Publication date: 11 July 2019

Eryong Liu, Yingxin Zhang, Xiang Wang, Zhixiang Zeng, Huiling Du and Hongmei Qin

This paper aims to improve the tribocorrosion properties of 316L, thus WC/Ni60 coated 316L was prepared by thermal spraying technique.

Abstract

Purpose

This paper aims to improve the tribocorrosion properties of 316L, thus WC/Ni60 coated 316L was prepared by thermal spraying technique.

Design/methodology/approach

Composition and microstructure of WC/Ni60 coating was investigated, and tribological properties of 316 L and WC/Ni60 coating were studied under dry sliding, deionized water and artificial seawater.

Findings

The results showed that WC/Ni60 coating was lamellar structure, and the phase composition consisted of γ-Ni solid solution, carbides and borides. Furthermore, the hardness and corrosion resistance of 316 L in static seawater and wear resistance in dry sliding were improved by WC reinforced nickel-based coating. Furthermore, tribocorrosion results demonstrated that wear resistance of WC/Ni60 coating was also significantly better than 316 L, especially for higher load at artificial seawater. The reason can be attributed to the fact that the passive film of WC/Ni60 coating consisted of tungsten carbide, Ni(OH)2 and FeOOH for WC/Ni60 coating and only FeOOH for 316 L.

Originality/value

According to this study, it can be concluded that WC phases acted as a role in resisting the wear damages. Meanwhile, Ni-based materials performed well in corrosion resistance. Thus, the combined-effect Ni-based alloys and WC phases in WC/Ni60 coating showed better tribocorrosion performance than 316 L.

Details

Industrial Lubrication and Tribology, vol. 71 no. 6
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 8 June 2021

Eryong Liu, Yuan Xue, Yaping Bai, Jibin Pu, Shuangming Du and Huiling Du

The purpose of this paper is to improve the tribological properties of aluminum cylinder liner. Higher martensite contents were closely related to the higher hardness and…

Abstract

Purpose

The purpose of this paper is to improve the tribological properties of aluminum cylinder liner. Higher martensite contents were closely related to the higher hardness and excellent wear resistance of Fe-based coatings. Furthermore, the grain size of the Fe-based coating was approximately 40 nm, which provides an excellent fine grain strengthening effect.

Design/methodology/approach

To improve the tribological properties of aluminum cylinder liners, a Fe-based martensite coating was prepared by internal plasma spraying technology, whose microstructure and tribological properties were then investigated.

Findings

Sprayed Fe-based coating possessed a low contact angle and strong adhesion with lubricating oil. In a simulated engine condition, Fe-based coating exhibited a decreased friction coefficient and increased wear resistance under oil lubrication, which was dominated by a stronger adhesive force with lubricating oil, higher martensite contents on the worn surface, higher hardness and higher H/E value than those of the reference HT 200 and Al-19Si cylinder material.

Originality/value

Nanostructure Fe-based martensite coating was sprayed on an aluminum cylinder liner, which demonstrated remarkable advantages over the reference cylinder material.

Details

Industrial Lubrication and Tribology, vol. 73 no. 5
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 3 October 2023

Jingyu Cheng, Minxi Wang, Lilin Wu and Xin Li

The purpose of this paper is to explore the high-quality development (HQD) strategy of Chinese mineral resource enterprises, which is important for Chinese mineral resource…

Abstract

Purpose

The purpose of this paper is to explore the high-quality development (HQD) strategy of Chinese mineral resource enterprises, which is important for Chinese mineral resource enterprises to improve the efficiency and benefit of resource utilization, reduce the intensity of resource and energy consumption and gradually form resource-saving and environment-friendly enterprises.

Design/methodology/approach

This study establishes an evaluation index system with four dimensions: economy, environment, society and management innovation. The entropy value method assigns weights to them and then uses the system dynamics (SD) model for case simulation.

Findings

The results of the SD simulation conclude that the fulfillment of social responsibility and the implementation of management innovation can accelerate the realization of HQD of mineral resource enterprises; profitability plays a crucial role in economic indicators; the improvement of energy-saving volume has the most significant impact on environmental benefits; the social contribution is the key element to measure social indicators; and the sales rate of core products has the most significant impact on the benefits of management innovation.

Originality/value

Based on the few studies on the evaluation of the development strategy of mineral resource enterprises, this study establishes an evaluation index system that considers the interactions between indicators, combines the entropy value method with SD and uses the SD model to comprehensively and systematically analyze the impact and degree of each factor on the HQD of mineral resource enterprises.

Details

Chinese Management Studies, vol. 18 no. 3
Type: Research Article
ISSN: 1750-614X

Keywords

Article
Publication date: 19 July 2023

Gaurav Kumar, Molla Ramizur Rahman, Abhinav Rajverma and Arun Kumar Misra

This study aims to analyse the systemic risk emitted by all publicly listed commercial banks in a key emerging economy, India.

Abstract

Purpose

This study aims to analyse the systemic risk emitted by all publicly listed commercial banks in a key emerging economy, India.

Design/methodology/approach

The study makes use of the Tobias and Brunnermeier (2016) estimator to quantify the systemic risk (ΔCoVaR) that banks contribute to the system. The methodology addresses a classification problem based on the probability that a particular bank will emit high systemic risk or moderate systemic risk. The study applies machine learning models such as logistic regression, random forest (RF), neural networks and gradient boosting machine (GBM) and addresses the issue of imbalanced data sets to investigate bank’s balance sheet features and bank’s stock features which may potentially determine the factors of systemic risk emission.

Findings

The study reports that across various performance matrices, the authors find that two specifications are preferred: RF and GBM. The study identifies lag of the estimator of systemic risk, stock beta, stock volatility and return on equity as important features to explain emission of systemic risk.

Practical implications

The findings will help banks and regulators with the key features that can be used to formulate the policy decisions.

Originality/value

This study contributes to the existing literature by suggesting classification algorithms that can be used to model the probability of systemic risk emission in a classification problem setting. Further, the study identifies the features responsible for the likelihood of systemic risk.

Details

Journal of Modelling in Management, vol. 19 no. 2
Type: Research Article
ISSN: 1746-5664

Keywords

Article
Publication date: 22 September 2021

Charmant Sengabira Ndereyimana, Antonio K.W. Lau, Dana-Nicoleta Lascu and Ajay K. Manrai

Heeding the call for insights into the Sub-Saharan African international marketing context, this study aims to empirically examine consumers' desires and motivations for buying…

Abstract

Purpose

Heeding the call for insights into the Sub-Saharan African international marketing context, this study aims to empirically examine consumers' desires and motivations for buying counterfeit luxury goods. It examines influences on consumers' attitudes and purchase intentions related to counterfeit luxury goods in Rwanda, one of Sub-Saharan Africa's fastest-growing economies and growing luxury markets, developing and testing a model examining the effect of social context on personal attributes, providing evidence on economic and social-status factors as drivers for counterfeiting.

Design/methodology/approach

The data were collected using an online survey administered in Rwanda to consumers who had previously purchased luxury goods and counterfeits. A total of 312 valid responses were analyzed using structural equation modeling.

Findings

This study found that normative and informational influences had a positive effect on Rwandan consumers' attitude toward purchasing counterfeit luxury products, with attitude influencing purchase intentions directly and indirectly, through mediating variable desire for status or through value consciousness and desire for status.

Originality/value

The study contributes to academic research − one of the first empirical studies to examine consumers' desires and motivations for buying counterfeit luxury goods in Sub-Saharan Africa, providing insights that benefit scholars and practitioners seeking to better understand a market where more than half of the world's fastest economies are located.

Article
Publication date: 12 March 2018

Subhadip Roy, Varsha Jain and Nikita Matta

The purpose of this paper is to empirically validate a model of luxury fashion consumption that integrates the antecedents and consequences of luxury buying in a developing nation…

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Abstract

Purpose

The purpose of this paper is to empirically validate a model of luxury fashion consumption that integrates the antecedents and consequences of luxury buying in a developing nation context.

Design/methodology/approach

The hypotheses developed in the conceptual model are tested using survey data collected through mall intercept survey of real consumers (with sample sizes 382 and 544). Factor analysis and structural equation modeling are used to analyze the data.

Findings

Major results suggest a significant impact of consumer’s local/global orientation on the motivations and associations behind the luxury buying. Motivations and associations are found to influence luxury consumption, which in turn is found to have a positive effect on post-purchase thoughts/feelings. Social influence is found to have a moderating impact on the effects of motivations and associations on luxury consumption, respectively.

Research limitations/implications

The study is restricted to a developing nation context. However, this is one of the novel attempts to validate a comprehensive model of luxury consumption that could be replicated in other contexts.

Practical implications

The findings provide guidelines for a luxury marketer on the factors to consider and monitor while marketing a luxury fashion brand.

Originality/value

The present study adds a new perspective to the literature on luxury buying behavior with its empirically validated comprehensive model.

Details

Journal of Fashion Marketing and Management: An International Journal, vol. 22 no. 1
Type: Research Article
ISSN: 1361-2026

Keywords

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