Jiabao Pan, Rui Li and Ao Wang
The adverse effects of temperature on the lubricating properties of nano magnetorheological grease are reduced by applying of a magnetic field.
Abstract
Purpose
The adverse effects of temperature on the lubricating properties of nano magnetorheological grease are reduced by applying of a magnetic field.
Design/methodology/approach
Nano magnetorheological grease was prepared via a thermal water bath with stirring. The lubricating properties of the grease were investigated at different temperatures. Then the lubricity of the prepared nano magnetorheological grease was investigated under the effect of thermomagnetic coupling.
Findings
As the temperature rises, the coefficient of friction of grease lubrication gradually increases, surface wear gradually increases and lubrication performance gradually decreases. Compared with grease, magnetorheological grease has a decreased coefficient of friction and enhanced lubrication effect under the action of a magnetic field at different temperatures.
Originality/value
A lubrication method using a magnetic field to reduce the effect of temperature is established, thereby providing new ideas for lubrication design under a wide range of temperature conditions.
Details
Keywords
Jiabao Pan, Huaibiao Wu, Ao Wang, Qingwen Dai and Xiaolei Wang
This paper aims to investigate the influence of high-temperature thermal action on grease performance from the angle of film-forming performance.
Abstract
Purpose
This paper aims to investigate the influence of high-temperature thermal action on grease performance from the angle of film-forming performance.
Design/methodology/approach
A static thermal aging method was used to prepare high-temperature thermal grease samples after high-temperature thermal action. On the basis of optical interference technology, the film-forming characteristics of fresh grease samples and the grease samples after high-temperature thermal action under variable speed and fixed speed conditions were explored.
Findings
The decrease in the structural entanglement performance of the grease after short-term high-temperature thermal action makes its film-forming performance better. The mechanism is that the lubricating grease soap fiber entanglement is reduced. Although the continuous high-temperature thermal action can make the grease film-forming performance better, its mechanism is that the soap fiber structure caused by high-temperature thermal action is damaged and is easy to be cut off under the action of shear.
Originality/value
The effect of structural system change on its film formation performance was discussed in combination with the change in grease structure characteristics, and the mechanism of action was revealed.
Details
Keywords
Lei Li, Jiabao Lin, Ofir Turel, Peng Liu and Xin (Robert) Luo
This study aimed to investigate the impact of e-commerce capabilities on agricultural firms’ performance gains through organizational agility.
Abstract
Purpose
This study aimed to investigate the impact of e-commerce capabilities on agricultural firms’ performance gains through organizational agility.
Design/methodology/approach
A survey was used to collect data from 280 managers of agricultural firms. The proposed model was tested via structural equation modeling.
Findings
The empirical results indicated that organizational agility plays a mediating role in conveying the positive influences of e-commerce capabilities on agricultural firms’ performance gains. Specifically, managerial, talent and technical capabilities have different effects on market capitalization and operational adjustment agility, with talent capability performing the most important role. Market capitalization and operational adjustment agility have positive impacts on financial and nonfinancial performance gains, respectively.
Originality/value
This study provides a new framework to understand the relationships between e-commerce capabilities, organizational agility and agricultural firms’ performance gains.
Details
Keywords
Anthony D. MAY, Masanobu KII, Roger L. MACKETT and Haixiao PAN
By 2050 there will be 6.9 billion people living in urban areas, accounting for 70% of the global population. The most developed nations will have urbanisation rates as high as…
Abstract
By 2050 there will be 6.9 billion people living in urban areas, accounting for 70% of the global population. The most developed nations will have urbanisation rates as high as 90%. Not only will more people be living in cities, but the largest cities will be getting larger. In their analysis in Chapter 2, Kii and Doi estimate that there may be as many as 17 megacities, with more than 10 million inhabitants, in China by 2050. Even so, the bulk of urban population growth is likely to be in smaller cities.
Due to climate change and an increasing concentration of the world’s population in vulnerable areas, how to manage catastrophe risk efficiently and cover disaster losses fairly is…
Abstract
Purpose
Due to climate change and an increasing concentration of the world’s population in vulnerable areas, how to manage catastrophe risk efficiently and cover disaster losses fairly is still a universal dilemma.
Methodology
This paper applies a law and economic approach.
Findings
China’s mechanism for managing catastrophic disaster risk is in many ways unique. It emphasizes government responsibilities and works well in many respects, especially in disaster emergency relief. Nonetheless, China’s mechanism which has the vestige of a centrally planned economy needs reform.
Practical Implications
I propose a catastrophe insurance market-enhancing framework which marries the merits of both the market and government to manage catastrophe risks. There are three pillars of the framework: (i) sustaining a strong and capable government; (ii) government enhancement of the market, neither supplanting nor retarding it; (iii) legalizing the relationship between government and market to prevent government from undermining well-functioning market operations. A catastrophe insurance market-enhancing framework may provide insights for developing catastrophe insurance in China and other transitional nations.
Originality
First, this paper analyzes China’s mechanism for managing catastrophic disaster risks and China’s approach which emphasizes government responsibilities will shed light on solving how to manage catastrophe risk efficiently and cover disaster losses fairly. Second, this paper starts a broader discussion about government stimulation of developing catastrophe insurance and this framework can stimulate attention to solve the universal dilemma.
Details
Keywords
Purpose – This chapter explores the functions of institutional setting, technical requirements and local city characteristics as they affect the implementation of sustainable…
Abstract
Purpose – This chapter explores the functions of institutional setting, technical requirements and local city characteristics as they affect the implementation of sustainable urban travel policies in China under the pressure of fast motorization and the constraints of energy and resource limitations.
Methodology – We reviewed the documents related to sustainable urban transport vision in China from central government and compared the motorization and urban transport policy at local city level in relation to social equity, urban transport finance, as well as the challenge of an ageing society.
Findings – The concept of sustainable development had been widely talked about in China but has not yet been effectively translated into actions in urban transport. There is a need to strengthen the synchronization of central government and local government strategies on sustainable transport in order to achieve less car-dependent cities.
Research limitations/implications – We need more research to understand the specific characteristics of the Chinese urban transport system and the constraints on the implementation of sustainable transport policy at a local level.
Practical and social implications – The achievement of a higher share of walking and cycling will greatly improve sustainable urban mobility, in terms of social equity, quality of urban life and also fossil energy consumption.
Originality – Current policy documents and implementation practice were analysed to provide the reader with a deep understanding of urban transport policy in China.
Details
Keywords
Jiabao Lin, Lei Li, Yanmei Yan and Ofir Turel
Building on the Chinese guanxi perspective, the purpose of this paper is to develop a theoretical model that explains the indirect effects of social support from friends on social…
Abstract
Purpose
Building on the Chinese guanxi perspective, the purpose of this paper is to develop a theoretical model that explains the indirect effects of social support from friends on social commerce intentions, as mediated through the relational aspects that potential buyers develop with sellers.
Design/methodology/approach
Hypotheses are tested with partial least squares (PLS)-graph applied to data collected via a survey of social media users (n=511). SPSS and PLS-graph are the statistical analysis tools used in this study.
Findings
Relationship exists in social commerce interactions and its quality can be captured by swift guanxi and trust. These swift relationships matter as they drive users’ behavioral intentions on social commerce sites. The informational and social support people receive from friends helps in improving the relationship quality and can indirectly influence user behaviors on these sites.
Research limitations/implications
This study has relied on a convenient sampling and this may limit the generalizability of the findings. Future research should employ broader and more random sampling techniques to re-validate and extend the findings.
Originality/value
The interpersonal aspect of relationship quality has received little attention in the social commerce literature. This study develops a theoretical model that explains consumers’ intention in social commerce. The findings reveal the mechanisms through which different types of social support indirectly influence social commerce intentions. They provide a unique glimpse into consumer behavior in Chinese settings, in which the guanxi aspect of relationship quality highly matters.
Details
Keywords
The purpose of this paper is to explore the extent to which Chinese classical virtues act as a restraint on consumerist hedonic values and the associated priority on profit…
Abstract
Purpose
The purpose of this paper is to explore the extent to which Chinese classical virtues act as a restraint on consumerist hedonic values and the associated priority on profit maximisation by managers.
Design/methodology/approach
The paper is based on a literature review and adopts a reflective approach to the topic.
Findings
The paper considers how Chinese classical virtues are related to contemporary relational or indigenous values and how a social tension is created between these values and the hedonic values now present in Chinese urban society. Implications for management and management education are reviewed in the light of this tension.
Practical implications
The social unrest created by the privatisation of SOEs can be mitigated by the promotion of management education sensitised to the cultural norms and expectations of the Chinese people in relation to the role and responsibilities of managers. The Junzi (gentleman‐leader) archetype and the virtues of ren‐yi‐li are offered as exemplary features of a management seeking to balance social responsibility with profitability.
Originality/value
The paper highlights the social turbulence created by the advent of market economics in China and the concomitant rise of consumerism and the privatisation of state‐owned enterprises.
Details
Keywords
Zhuo Jun, Phan Chanvicheka and Gao Shuai
Management science, operational and financial risk of overseas enterprises.
Abstract
Subject area
Management science, operational and financial risk of overseas enterprises.
Study level/applicability
This case is mainly applicable to international business course and project management course.
Case overview
Since 1992, the Great Mekong sub-regional economic cooperation between China and ASEAN countries was officially launched and set free economic zone. Hydropower is starting to develop in recent years in Cambodia, and it is a good significance to Cambodia's industry. Furthermore, most of hydropower plants in Cambodia are built by Chinese companies. Thus, this paper will analyze the current risk and condition of Kamchay hydropower, as well as the development of Chinese enterprise for Cambodia economic and social development.
Expected learning outcomes
This case study provides students concepts on international business, project management, and operational risk of overseas enterprises. The principle of project contracting, labor cooperation, and project financial in international process are considered together with the implications they have for advancing understanding of the problem of the host country's government interests and the various risk of enterprises in international BOT projects.
Supplementary materials
Teaching notes are available for educators only. Please contact your library to gain login details or email support@emeraldinsight.com to request teaching notes.