Search results

1 – 10 of over 2000
Article
Publication date: 15 July 2022

Ning Zhang, Xu Haoran, Feng Jiang, Dawei Wang, Peng Chen and Qing Zhang

Based on the theoretical viewpoints of criminal geography and environmental criminology, this research uses spatial multi-criteria decision-making methods. In the process…

Abstract

Purpose

Based on the theoretical viewpoints of criminal geography and environmental criminology, this research uses spatial multi-criteria decision-making methods. In the process of spatial decision-making and optimization of police resources, researchers fully consider the dynamic application of Geographic Information System (GIS) and the effects of spatial prevention and control.

Design/methodology/approach

Researchers use an integrated method combining Policing Geographic Information System (PGIS) and multi-criteria decision analysis (MCDA). On the one hand, police GIS has an excellent visual data analysis platform and integrated decision support system in data management, spatial analysis, data exploration and regression analysis. On the other hand, through the design of the indicator system, the quantification of indicators, the determination of weights, comprehensive evaluation and sensitivity analysis, MCDA can select the best plan from a large number of alternatives. When joining MCDA, the spatial dimension will bring the research results closer to the real world.

Findings

The study finds that the crime of burglary is affected to a certain extent by the distribution of police forces, the location of police units. Another important finding of this research is the correlation between more precise preventive measures and the crime of burglary.

Originality/value

From a practical point of view, this research would help advance the role of police units and law enforcement agencies in preventing burglary crimes and provide experience for the allocation of regional police resources.

Details

Policing: An International Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1363-951X

Keywords

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. 39 no. 2
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 24 May 2022

Mingjin Wu, Feng Jiang and Jingyu Jiang

The purpose of this paper is to investigate the effect of Na2SiO3 concentration on the microstructure and corrosive properties of microarc oxidation (MAO) coating on…

42

Abstract

Purpose

The purpose of this paper is to investigate the effect of Na2SiO3 concentration on the microstructure and corrosive properties of microarc oxidation (MAO) coating on Al-Mg-Sc alloy and explore microstructure evolution rule of Al substrate in the contact area.

Design/methodology/approach

The Na2SiO3 concentration in electrolytes influenced the microstructure and corrosion behavior of MAO coatings. Instantaneous high temperature and high pressure due to microarc discharge caused annealing treatment. The corrosive behavior of the MAO coating was featured with polarization curves and electrochemical impedance spectrum in 3.5 Wt.% NaCl solution.

Findings

The substrate in the contact area existed the instantaneous annealing treatment, which caused obvious recrystallization. The coating prepared in electrolyte containing 7 g/L Na2SiO3 exhibited the highest protective properties in 3.5 Wt.% NaCl solution.

Originality/value

MAO treatment could increase the corrosion resistance by producing a protective layer on the Al-Mg-Sc alloy surface at a suitable Na2SiO3 concentration and microstructure evolution rule of Al substrate in the contact area was obtained.

Details

Anti-Corrosion Methods and Materials, vol. 69 no. 4
Type: Research Article
ISSN: 0003-5599

Keywords

Open Access
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…

1033

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

Keywords

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

Keywords

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…

1229

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

Book part
Publication date: 23 May 2022

Arcelia Toledo López and Dora Lilia Guzmán Cruz

The purpose of this study was to explore the innovative and proactive practices adopted by subsistence businesses under the COVID-19 health contingency. Evidence of the…

Abstract

The purpose of this study was to explore the innovative and proactive practices adopted by subsistence businesses under the COVID-19 health contingency. Evidence of the current situation and the contingency practices that businesses have implemented in dealing with the economic crisis caused by the COVID-19 pandemic was collected through a literature review of secondary information sources: bibliographic and hemerographic, as well as in-depth interviews with five owners of artisanal and agricultural subsistence businesses.

Faced with uncertainty, artisanal and agricultural subsistence businesses have adopted innovative and proactive survival practices. The closure of markets, the absence of tourism, the suspension of non-essential activities, the lack of mobility and transportation, and the closure of access in rural communities are some of the realities these businesses are experiencing. Subsistence businesses in marginalised areas are a long way from accessing information technologies for online sales and home deliveries, which are implemented by most businesses in urban areas. In contrast, they revert to ancestral marketing practices such as bartering and low prices to earn an income for family food. Despite the loss of over 50% of subsistence businesses in urban and semi-urban areas, online sales through social media and websites, socially responsible initiatives, along with government support programmes, have helped others stay in business.

Details

Research in Administrative Sciences Under COVID-19
Type: Book
ISBN: 978-1-80262-298-0

Keywords

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

Article
Publication date: 11 August 2022

Juan Guo, Yanfeng Han, Shouan Chen, Jianlin Cai and Haiming Dai

This paper aims to identify the role of the wall slip on the dynamic characteristics of the multi-groove water-lubricated bearing considering rough contact, including…

Abstract

Purpose

This paper aims to identify the role of the wall slip on the dynamic characteristics of the multi-groove water-lubricated bearing considering rough contact, including stiffness and damping coefficients of the water film and contact stiffness coefficient of the asperity contact.

Design/methodology/approach

The modified perturbed average Reynolds equations with the wall slip are derived, and the calculated perturbed hydrodynamic pressures are integrated to obtain the stiffness and damping coefficients of the water film. The elastic-plastic contact model of Kogut and Etsion is used to determine the contact stiffness coefficient.

Findings

Numerical results reveal that the wall slip has the more significant impact on the water film stiffness coefficients compared with the damping and contact stiffness coefficients. When the slip angle lies in a reasonable range, the lubrication performance can be effectively improved, especially in the mixed lubrication condition. In addition, it is worth emphasizing that the abrupt change of the water film stiffness coefficients occurs at the region II (pressure zone) in this study.

Originality/value

The influence mechanism of the wall slip on the dynamic characteristics of the water-lubricated bearing considering rough contact is first revealed.

Details

Industrial Lubrication and Tribology, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0036-8792

Keywords

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

Keywords

1 – 10 of over 2000