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Article
Publication date: 18 June 2021

Feng Jiang and Yongxing Shen

The purpose of this paper is to propose a novel quasi-nonlocal coupling of the bond-based peridynamic model with the classical continuum mechanics model to fully take…

Abstract

Purpose

The purpose of this paper is to propose a novel quasi-nonlocal coupling of the bond-based peridynamic model with the classical continuum mechanics model to fully take advantage of their merits and be free of ghost forces.

Design/methodology/approach

This study reconstructs a total energy functional by introducing a coupling parameter that alters only the nonlocal interactions in the coupling region rather than the whole region and a modified elasticity tensor that affects the local interactions. Then, the consistency of force patch test is enforced in the coupling region to completely eliminate the ghost force in a general energy-based coupling scheme. For a one-dimensional problem, these coupling parameters are further determined through an energy patch test to preserve the energy equivalence or through an l1-regularization. And, for a two- or three-dimensional problem, depending on the existence of a solution to the discretized force patch test, they are determined through an l1-minimization or l1-regularization.

Findings

One- and two-dimensional numerical examples under affine deformation have been conducted to verify the accuracy of the quasi-nonlocal coupling method, which exhibits no ghost force. Moreover, the coupling model can reproduce almost the same deformation behaviors of points near the crack for a cracked plate under tension as that from a pure peridynamic model, the former with a rather low computational cost and an easier application of boundary conditions.

Originality/value

This work is aiming at getting over long-standing ghost force issues in the energy-based coupling scheme. The numerical results from the cracked plate problem are exhibited promising extension to dynamic problems.

Details

Engineering Computations, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0264-4401

Keywords

Content available
Article
Publication date: 26 September 2019

Yongjing Wang, Qingxin Lan, Feng Jiang and Chaofan Chen

As the contradiction between economic development, resource and environment has become increasingly prominent, low-carbon competitiveness has received worldwide focus…

Abstract

Purpose

As the contradiction between economic development, resource and environment has become increasingly prominent, low-carbon competitiveness has received worldwide focus. This study aims to examine low-carbon competitiveness in 31 provinces (cities and regions) of China.

Design/methodology/approach

An evaluation index system for low-carbon competitiveness in China has been constructed, which is composed of 25 economic, social, environmental and policy indicators. To study the state of low-carbon competitiveness and resistance to China’ development of low-carbon competitiveness, this study uses a combination of the catastrophe progression model, the spatial autocorrelation model and the barrier method.

Findings

China’ low-carbon competitiveness gradually decreases from coastal to inland areas: the Tibet and Ningxia Hui autonomous regions are the least competitive regions, while the Shandong and Jiangsu provinces are the most competitive areas. The spatial correlation of the 31 provinces’ low-carbon competitiveness is very low and lacks regional cooperation. This study finds that the proportion of a region’ wetland area, the proportion of tertiary industries represented in its GDP and afforestation areas are the main factors in the development of low-carbon competitiveness. China should become the leader of carbon competitiveness by playing the leading role in the Eastern Region, optimizing the industrial structure, improving government supervision and strengthening environmental protection.

Originality/value

The paper provides a quantitative reference for evaluating China’ low-carbon competitiveness, which is beneficial for environmental policymaking. In addition, the evaluation and analysis methods offer relevant implications for developing countries.

Details

International Journal of Climate Change Strategies and Management, vol. 12 no. 1
Type: Research Article
ISSN: 1756-8692

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Article
Publication date: 14 May 2021

Feng Jiang, Chaofan Chen, Qingxin Lan and Zhaoyi Zhu

The purpose of this paper is to analyze whether China's exports can effectively improve the global competitiveness of other BRICS countries' exports from the perspective…

Abstract

Purpose

The purpose of this paper is to analyze whether China's exports can effectively improve the global competitiveness of other BRICS countries' exports from the perspective of intra-BRICS export trade.

Design/methodology/approach

This paper extends the multinational trade model and analyzes the mechanism of the technological upgrading effect from the perspective of dynamic general equilibrium theory. In addition, this paper uses the export panel data of 217 products with three-digit SITC codes from China to other BRICS member countries from 2000 to 2016 and constructs a dynamic empirical model for parameter estimation.

Findings

The results show that China's exports to other BRICS member countries can effectively promote the technological improvement of other BRICS member countries' export products. In particular, the formal establishment of the BRICS organization in 2010 has significantly improved the efficiency of China's export technology optimization.

Originality/value

In the background of the prevalence of anti-globalization and the proliferation of protectionism, this paper proves that the deepening of trade cooperation between other BRICS members with China can help optimize their own international trade competitiveness and allow China's development dividend to benefit more countries and people.

Details

International Journal of Emerging Markets, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1746-8809

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Article
Publication date: 10 April 2020

Hong Yang, Yimei Hu, Han Qiao, Shouyang Wang and Feng Jiang

The purpose of this paper is to elaborate on the interactive conflicts between business and governmental authorities in the regulatory process of an emerging business…

Abstract

Purpose

The purpose of this paper is to elaborate on the interactive conflicts between business and governmental authorities in the regulatory process of an emerging business model: sharing economy. Focusing on bike sharing system, the study also investigates the conflict-handling strategy of bike sharing companies and government regulation.

Design/methodology/approach

An evolutionary game model is introduced to illustrate the interactive conflict between bike sharing companies and government regulation, combined with system dynamics (SD) to simulate the evolutionary conflict-handling strategies between the two players.

Findings

The dynamic strategies of the two players are observed, and under five conditions the conflict outcomes are evolutionary stable states. Simulations show that each party sacrifices part of its interest and adjust its strategy according to that of the other, indicating the conflict-handling strategy as a compromising mode. Furthermore, the strategies of bike sharing companies are sensitive to additional operation and maintenance costs for producing low-quality bicycles and costs of positive regulation, which provides theoretical guidance for regulatory authorities.

Originality/value

The station-less bike sharing come up in China recently, and it is an important research field of entrepreneurship. Owing to the uniqueness and novelty of the phenomenon, conflicts and challenges exist during the regulation process. Thus, the study practically contributes to the conflict-handling strategies of businesses and government under the context of sharing economy. Methodologically, as a novel issue with less available data to carry out empirical research, this study combines evolutionary game theory with SD to shed light on the complex interactions between businesses and government. The research method can be applied to other entrepreneurial studies.

Details

International Journal of Conflict Management, vol. 31 no. 3
Type: Research Article
ISSN: 1044-4068

Keywords

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Book part
Publication date: 11 July 2018

Elricke Botha

The aim of this chapter is to provide the readers with a brief background to the characteristics of tourism and a synoptic presentation of the main trends in tourism…

Abstract

Purpose

The aim of this chapter is to provide the readers with a brief background to the characteristics of tourism and a synoptic presentation of the main trends in tourism markets and challenges that tourism businesses should deal with.

Methodology/approach

A literature review was conducted on the relevant trends that can affect the management and marketing of tourism businesses. Micro case studies were also presented as practical examples of how tourism businesses have adapted to trends.

Findings

This chapter highlights the specific characteristics of the tourism industry, as well as the trends in the market/business environment. Tourism businesses need to remain aware of trends and find solutions to adapt their services and activities to take advantage of them.

Research limitations/implications

This chapter is explorative in nature because it has made used of extant literature.

Practical implications

Tourism entrepreneurs are encouraged to stay abreast of changes in the business environment. Some of the examples provided may only be applicable in the short run but other examples have long-term impact. Valuable solutions are provided for consideration.

Originality/value

This chapter analyses several trends affecting the tourism industry from management and marketing perspectives. This analysis gives a better understanding of how these trends specifically affect tourism. This chapter highlights the importance of monitoring the trends and their evolution in the various markets.

Details

The Emerald Handbook of Entrepreneurship in Tourism, Travel and Hospitality
Type: Book
ISBN: 978-1-78743-529-2

Keywords

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Article
Publication date: 20 July 2020

Qiansong Zhang, Jieyi Pan and Taiwen Feng

Since firms are often puzzled with the adoption of proper governing mechanism to achieve their environmental benefits, this research examines how green supplier…

Abstract

Purpose

Since firms are often puzzled with the adoption of proper governing mechanism to achieve their environmental benefits, this research examines how green supplier integration (GSI) affects environmental performance via environmental innovation and the moderating role of ambidextrous governance.

Design/methodology/approach

The authors tested the hypotheses by adopting two-waved survey data from 206 Chinese manufacturers and the hierarchical regression analysis.

Findings

The results revealed that GSI is positively linked with both incremental and radical environmental innovation, which further enhance environmental performance. Moreover, balanced ambidexterity enhanced the link between GSI and incremental environmental innovation, while combined ambidexterity alleviated the link between GSI and radical environmental innovation.

Practical implications

Firms should integrate suppliers into their activities of dealing with environmental issues to realize environmental benefits through facilitating environmental innovation. Moreover, the choice of different dimensions of ambidextrous governance can affect the environmental benefits of GSI.

Originality/value

This research enriches the authors’ understanding of how to achieve environmental benefits by engaging in GSI, and it provides a novel and insightful approach for better managing GSI from the perspective of ambidextrous governance.

Details

International Journal of Physical Distribution & Logistics Management, vol. 50 no. 7/8
Type: Research Article
ISSN: 0960-0035

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Article
Publication date: 3 September 2021

Haiqing Shi, Taiwen Feng and Zhiyi Li

The purpose of this study is to explore the inverted U-shaped relationship between green customer integration (GCI) and opportunistic behavior, as well as the moderating…

Abstract

Purpose

The purpose of this study is to explore the inverted U-shaped relationship between green customer integration (GCI) and opportunistic behavior, as well as the moderating effects of contractual control and relational norms.

Design/methodology/approach

The authors conducted hierarchical regression analysis using two-waved data from 206 Chinese manufacturing firms to test hypotheses.

Findings

The authors found that GCI has an inverted U-shaped effect on opportunistic behavior. Furthermore, both contractual control and relational norms negatively moderate the inverted U-shaped relationship between GCI and opportunistic behavior.

Originality/value

This study uncovers an inverted U-shaped link between GCI and opportunistic behavior by combining transaction cost economics and social exchange theory. Furthermore, this study reveals contractual control and relational norms can be deemed as two boundary conditions affecting the inverted U-shaped GCI–opportunistic behavior relationship. This study also offers managerial implications for firms curbing opportunistic behavior that may result from GCI.

Details

Asia Pacific Journal of Marketing and Logistics, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1355-5855

Keywords

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Article
Publication date: 10 January 2020

Yu Chen, Jun Feng, Y. Sun, Xu Peng, Qiao Dai and Chengtao Yu

The purpose of this study is to investigate the influence of groove shape on the hydrodynamic characteristics of a journal bearing.

Abstract

Purpose

The purpose of this study is to investigate the influence of groove shape on the hydrodynamic characteristics of a journal bearing.

Design/methodology/approach

The computational fluid dynamics model also takes into account the cavitation phenomena and thermal effect, which can illustrate the lubrication performance of a journal bearing.

Findings

The hydrodynamic simulations of the journal bearing with the different groove shapes are conducted under different operation conditions.

Originality/value

Based on the numerical analysis, the suggestions are presented for groove shape selection and can be used to the design of a journal bearing under the extreme operation condition.

Details

Engineering Computations, vol. 37 no. 5
Type: Research Article
ISSN: 0264-4401

Keywords

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Article
Publication date: 13 March 2018

Rofin T.M. and Biswajit Mahanty

The purpose of this paper is to investigate the impact of price adjustment speed on the stability of Bertrand–Nash equilibrium in the context of a dual-channel supply…

Abstract

Purpose

The purpose of this paper is to investigate the impact of price adjustment speed on the stability of Bertrand–Nash equilibrium in the context of a dual-channel supply chain competition.

Design/methodology/approach

The paper considers a dual-channel supply chain comprising a manufacturer, a traditional retailer and an online retailer. A two-dimensional discrete dynamical system is used to examine the Bertrand competition between the retailers. The retailers are assumed to follow bounded rational expectations. Local stability of Bertrand–Nash equilibrium is investigated with respect to the price adjustment speed.

Findings

As the price adjustment speed increases, the stability of Bertrand–Nash equilibrium is lost, leading to complex chaotic dynamics. The results showed that chaotic dynamics deteriorates the profit of the retailers. The authors also found that the chaos can be controlled using an adaptive adjustment mechanism and the retailers enjoy higher profit when the chaos is controlled.

Practical implications

This study helps retail managers to choose an appropriate price adjustment speed to maximize profit.

Originality/value

The heterogeneity of the retailers is not considered in the studies involving dynamics of retailer competition. This paper contributes to the literature by considering the operational difference between a traditional retailer and an online retailer, i.e. price adjustment speed. In addition, the study establishes a link between price adjustment speed and profit.

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Article
Publication date: 7 August 2018

Huihui Feng and Liping Peng

This paper aims to establish the mathematical models for the water-lubricated thrust bearing with groove texture considering turbulence and cavitation and numerically…

Abstract

Purpose

This paper aims to establish the mathematical models for the water-lubricated thrust bearing with groove texture considering turbulence and cavitation and numerically analyze the influence of rotary speed, texture depth, groove number and groove width on the static performance of the bearing.

Design/methodology/approach

The turbulent Reynolds equation and the Jakobsson–Floberg–Olsson cavitation model are adopted for the analysis. The Payvar–Salant algorithm and Finite difference schemes are used to discretize the governing equations. To illustrate the influence of turbulence, the performance of the bearing predicted by the turbulent and laminar models are compared.

Findings

According to the results, the load capacity and the friction force calculated by the turbulent model are greater than those obtained by laminar model, and the deviation between them gradually increases with the increased rotary speed. So, the turbulent effect should be fully considered for high-speed water-lubricated bearing with surface texture. There exists a peak value for the load capacity of the water-lubricated thrust bearing in respect to the texture depth, the number of grooves and the groove width ratio, while the friction force varies slowly with those parameters. Well-designed groove texture can improve the performance of the water-lubricated thrust bearing.

Originality/value

This paper proposes a mathematical model considering turbulent and cavitation effect for water-lubricated thrust bearing with surface texture. This model can be complementary to conventional laminar model which is used to analyze the performance of textured bearing at low rotary speed.

Details

Industrial Lubrication and Tribology, vol. 70 no. 6
Type: Research Article
ISSN: 0036-8792

Keywords

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