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Article
Publication date: 27 September 2022

Ying Ma and Ewan Wright

This study aims to interrogate and expand on the flexible citizenship framework by illuminating students' emergent identities and imagined future mobilities in China's…

Abstract

Purpose

This study aims to interrogate and expand on the flexible citizenship framework by illuminating students' emergent identities and imagined future mobilities in China's expanding international school sector.

Design/methodology/approach

In-depth semistructured interviews were conducted with international school students and their parents in Shenzhen, covering their motivations for overseas higher education, experience with international schooling, self-perceived identities and imagined futures.

Findings

The participants aspired to overseas higher education for both symbolic capital attainment and embodied cultural cultivation to thrive in a globalised world. They expressed confidence that international schooling experiences prepared students for mobility to Western higher education and cultivated globally-oriented identities while not undermining their Chinese roots. They imagined their futures in terms of considerable flexibility, with a rising China viewed as an attractive and feasible option for career development.

Research limitations/implications

This research provides an enriched understanding of a new generation of globally mobile Chinese students. The participants held distinctively different outlooks, aspirations and attitudes than depicted in the flexible citizenship framework, which emphasised a one-dimensional and instrumentalist portrayal of Chinese international students. This study discusses cross-generational changes in the desire for overseas education and a global-national outlook among young people in the context of significant social transformations in urban China.

Originality/value

The originality of this study is in expanding the flexible citizenship framework with reference to the emergent identities and pathways of students in the international schooling sector in China.

Details

Social Transformations in Chinese Societies, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1871-2673

Keywords

Article
Publication date: 15 November 2022

Chao Han, Li Ma, Bo Jiang Ma, Guosheng Huang and Ying Xiang Ma

This paper aims to verify weather atmospheric plasma spray (APS) in situ remelting posttreatment is effective for densifying the porous FeCoCrMoCBY amorphous alloy (FAA…

Abstract

Purpose

This paper aims to verify weather atmospheric plasma spray (APS) in situ remelting posttreatment is effective for densifying the porous FeCoCrMoCBY amorphous alloy (FAA) coating and improving the antiabrasion and anticorrosion performances or not.

Design/methodology/approach

APS was used to deposit and in situ densify FAA coating on the 40Cr substrate. Scanning electron microscope, X-ray diffractometer, energy dispersive spectroscopy, neutral salt spray, hardness and wear behavior test were used to evaluate the densifying effects.

Findings

APS remelting technology can effectively improve the hardness of the coating by reducing the porosity. After remelting at 30 kW power, the hardness of the coating increased by about 260 HV0.2 and the porosity decreased to 2.78%. The amorphous content of the coating is 93.9%, which is about 3.5% lower than original powders. The electrochemical impedance spectrum and neutral salt spray test results show that APS remelting can reduce the corrosion rate by about 62.7%.

Originality/value

APS remelting method is firstly proposed in this work to replace laser remelting or laser cladding methods. APS remelting method can effectively improve the corrosion and abrasion resistance of the FAA coating by increasing the densification with much low recrystallization, which is big progress for application of FAA coatings.

Details

Anti-Corrosion Methods and Materials, vol. 70 no. 1
Type: Research Article
ISSN: 0003-5599

Keywords

Article
Publication date: 17 April 2020

Guirong Yang, Wenming Song, Zibo Zhu, Ying Ma and Yuan Hao

The paper aims to study the effect of liquid flow velocity on corrosion behavior of 20# steel at initial stage under (CO2/aqueous solution) gas–liquid two-phase plug flow…

Abstract

Purpose

The paper aims to study the effect of liquid flow velocity on corrosion behavior of 20# steel at initial stage under (CO2/aqueous solution) gas–liquid two-phase plug flow conditions.

Design/methodology/approach

Weight loss, scanning electron microscopy, energy-dispersive X-ray spectroscopy and XPS methods were used in this study.

Findings

The corrosion rate increased with the increasing liquid flow velocity at any different corrosion time. The corrosion rate decreased with the extension of corrosion time at the same liquid flow velocity. There was no continuous corrosion products film on the whole pipe wall at any different corrosion time. The macroscopic brown-yellow corrosion products on the pipe wall surface decreased with the increasing liquid flow velocity and the loose floccus corrosion products decreased gradually until these products were transformed into un-continuous needle-like dense products with the increasing liquid velocity. The main elements among the products film were Fe, C and O, and the main phases of products film on the pipe wall were Fe3C, FeCO3, FeOOH and Fe3O4. When the corrosion time was 1 h under different liquid–velocity condition, the thickness of local corrosion products film was from 3.5 to 3.8 µm.

Originality/value

The ion mass transfer model of corrosion process in pipe was put forward under gas–liquid two-phase plug flow condition. The total thickness of diffusion sublayer and turbulence sublayer decreased as well as the turbulence propagation coefficient increased with the increasing liquid velocity, which led to the increasing velocity of ion transfer during corrosion process. This was the fundamental reason for the increase of corrosion rate with the increasing liquid velocity.

Details

Anti-Corrosion Methods and Materials, vol. 67 no. 4
Type: Research Article
ISSN: 0003-5599

Keywords

Article
Publication date: 11 October 2018

Guirong Yang, Wenming Song, Fuqiang Wang, Ying Ma and Yuan Hao

This paper aims to investigate the corrosion rate, surface morphology and composition of corrosion products of 20# seamless steel in aqueous CO2 solution under stratified…

Abstract

Purpose

This paper aims to investigate the corrosion rate, surface morphology and composition of corrosion products of 20# seamless steel in aqueous CO2 solution under stratified gas-liquid two-phase flow condition. The development of a corrosion products layer has also been discussed.

Design/methodology/approach

The following methods were used: weight loss method, scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction.

Findings

The corrosion rate curve presents an irregular zigzag change trend with a gradual increase in time. The peak value of the corrosion rate appears when the corrosion time is 4 h and 8 h. The corrosion products layer is composed of two sub-layers: the inner dense layer that is about 6 µm thick and the outer loose layer that is about 9 µm thick when the corrosion time is 8 h. The main corrosion product are FeCO3 and Fe2O3.

Originality/value

The atomic ratio of Fe/C/O is relatively stable for the inner dense layer, but changes in thickness for the outer loose layer. There is a densification stage after a loose corrosion products layer forms, and it is periodic.

Details

Anti-Corrosion Methods and Materials, vol. 66 no. 1
Type: Research Article
ISSN: 0003-5599

Keywords

Article
Publication date: 10 December 2018

Ying Ma, Chen Wu, Kang Ping, Hong Chen and Changbin Jiang

Public safety issues are highly concerned by the state and public. As an emerging network technology and industrial mode, Internet of Things (IoT) has great application…

2974

Abstract

Purpose

Public safety issues are highly concerned by the state and public. As an emerging network technology and industrial mode, Internet of Things (IoT) has great application prospect because of its architecture advantages and technical features, and has drawn wide attention from all walks of life. With the development of IoT, especially the putting forward of concept of public safety IoT, IoT has been a certain degree of application in the field of public safety. Because of that, public safety regulatory technology is improved. The paper aims to discuss this issue.

Design/methodology/approach

By summarizing scholars’ research results, this paper analyzes the application of IoT in public safety regulation, points out the challenges in application, and then puts forward some suggestions, pointing out IoT development prospects in the area of public safety regulation.

Findings

The application of IoT in the field of public safety from the perspective of IoT architecture and the perspective of the main technologies of IoT is paid attention. And this market that IoT added to other services in the public sector would generate $4.6 trillion of net profit globally in the next decade. Therefore, government leaders and public safety organizations should start exploring the full potential that IoT could offer to public safety.

Originality/value

The research will develop the theory of IOT, which is valuable to strengthen the IOT technology innovation and the application extension. The application of IOT in public safety will enhance the ability to supervise the public safety and guarantee the safe social condition for people’s life. So it is valuable in theory and in practice.

Details

Library Hi Tech, vol. 38 no. 1
Type: Research Article
ISSN: 0737-8831

Keywords

Article
Publication date: 29 March 2021

Guirong Yang, Zhaoxia Pan, Zhenghai Zhang, Wenming Song, Ying Ma and Yuan Hao

This study aims to investigate the initial corrosion behavior in aqueous solution of 20# seamless steel under (CO2/aqueous solution) gas–liquid two-phase stratified flow…

Abstract

Purpose

This study aims to investigate the initial corrosion behavior in aqueous solution of 20# seamless steel under (CO2/aqueous solution) gas–liquid two-phase stratified flow conditions.

Design/methodology/approach

The initial corrosion behavior was studied through the weight loss methods, scanning electron microscopy with energy-dispersive x-ray spectroscopy and x-ray diffraction.

Findings

The corrosion rate of 20# steel obviously increases with the increasing gas pressure at different corrosion time when the CO2 pressure is less than 0.11 MPa, and the increase of corrosion rate tends to be steady when the pressure exceeds 0.11 MPa. With the increase of CO2 pressure, the corrosion products changed from flocculent to acicular, granular and scaly. A four-stage model for the growth of the corrosion product layer was proposed, namely, the diffusion reaction stage, the local film formation stage, the complete film formation stage and the densification stage of the product film.

Originality/value

A four-stage model for the growth of the corrosion product layer on the pipe wall surface under this condition was proposed, namely, the diffusion reaction stage, the local film formation stage, the complete film formation stage and the densification stage of the product film. The growing process and densification mechanism of corrosion products layer were discussed.

Details

Anti-Corrosion Methods and Materials, vol. 68 no. 2
Type: Research Article
ISSN: 0003-5599

Keywords

Article
Publication date: 18 June 2019

Ying Ma, Kang Ping, Chen Wu, Long Chen, Hui Shi and Dazhi Chong

The Internet of Things (IoT) has attracted a lot of attention in both industrial and academic fields for recent years. Artificial intelligence (AI) has developed rapidly…

1275

Abstract

Purpose

The Internet of Things (IoT) has attracted a lot of attention in both industrial and academic fields for recent years. Artificial intelligence (AI) has developed rapidly in recent years as well. AI naturally combines with the Internet of Things in various ways, enabling big data applications, machine learning algorithms, deep learning, knowledge discovery, neural networks and other technologies. The purpose of this paper is to provide state of the art in AI powered IoT and study smart public services in China.

Design/methodology/approach

This paper reviewed the articles published on AI powered IoT from 2009 to 2018. Case study as a research method has been chosen.

Findings

The AI powered IoT has been found in the areas of smart cities, healthcare, intelligent manufacturing and so on. First, this study summarizes recent research on AI powered IoT systematically; and second, this study identifies key research topics related to the field and real-world applications.

Originality/value

This research is of importance and significance to both industrial and academic fields researchers who need to understand the current and future development of intelligence in IoT. To the best of authors’ knowledge, this is the first study to review the literature on AI powered IoT from 2009 to 2018. This is also the first literature review on AI powered IoT with a case study of smart public service in China.

Details

Library Hi Tech, vol. 38 no. 1
Type: Research Article
ISSN: 0737-8831

Keywords

Article
Publication date: 29 November 2018

Changbin Jiang, Ying Ma, Hong Chen, Yangyin Zheng, Shan Gao and Shengxue Cheng

Cyber physical system (CPS) has attracted much attention from industry, government and academia due to its dramatic impact on society, economy and people’s daily lives…

2941

Abstract

Purpose

Cyber physical system (CPS) has attracted much attention from industry, government and academia due to its dramatic impact on society, economy and people’s daily lives. Scholars have conducted a number of studies on CPS. However, despite of the dynamic nature of this research area, a systematic and extensive review of recent research on CPS is unavailable. Accordingly, this paper conducts an intensive literature review on CPS and presents an overview of existing research on CPS. The purpose of this paper is to identify the challenges of studying CPS as well as the directions for future studies on CPS.

Design/methodology/approach

This paper examines existing literatures about CPS from 2006 to 2018 in Compendex, presenting its definition, architectures, characteristics and applications.

Findings

This study finds that CPS is closely integrated, diversified and large-scale network with complex multiple time scales. It requires dynamic reorganization/reconfiguration, mass computing, and closed, automated and control circuits. Currently, CPS has been applied in smart manufacturing, medical systems, smart city and smart libraries. The main challenges in designing CPS are to develop, to modify, to integrate abstractions and to set predictable timing of openness and physical interconnection of physical devices. Furthermore, security is a key issue in CPS.

Originality/value

This study adds knowledge to the existing literature of CPS by answering what the current level of development on CPS is and what the potential future research directions of CPS are.

Details

Library Hi Tech, vol. 38 no. 1
Type: Research Article
ISSN: 0737-8831

Keywords

Article
Publication date: 15 July 2021

Abdul Rauf, Ying Ma and Abdul Jalil

While previous studies find innovation to be an essential driver of export growth, the existing literature has neglected the role of different dimensions of technological…

Abstract

Purpose

While previous studies find innovation to be an essential driver of export growth, the existing literature has neglected the role of different dimensions of technological innovation in export performance, especially in emerging countries. In particular, much less attention has been provided to investigate how enhancing innovation activities in more technical industries influence the relationship between technological innovation and export. Purpose of this paper is to present a unified framework to empirically investigate the integrated impact of the various technological innovation dimensions on export performance of industrial enterprises in China.

Design/methodology/approach

Using a panel dataset of enterprise-level data classified into China’s two-digit capital- and technology-intensive manufacturing industries for the 1998–2016 period and applying system-GMM regressions to control for the problem of endogeneity, the authors empirically investigate the integrated impact of a variety of the dimensions of technological innovation on export.

Findings

The authors find that: (1) Domestic R&D efforts and technology spillovers from foreign investment are critical determinants for capital- and technology-intensive exports. (2) External technology may not automatically contribute to export success whereas the interaction of external technology with domestic skill and expertise is a necessary condition for global competitiveness. (3) There exists complementarity between domestic and foreign innovation efforts when they jointly determine export. (4) Chinese government’s trade and innovation policies have significantly contributed to its export growth. Also, the authors examine that the extent of the effect of innovation on export depends upon the type of industry and it is found to be greater in capital- and technology-intensive industries.

Originality/value

This paper fills the research gap in existing literature by distinguishing between different dimensions of technological innovation and integrating them into a unified framework to empirically investigate their impact on export performance of industrial enterprises in emerging countries. The study provides important insights for policymakers.

Details

European Journal of Innovation Management, vol. 26 no. 1
Type: Research Article
ISSN: 1460-1060

Keywords

Article
Publication date: 1 December 2021

Heshan Zhang, YanPeng Wang, Jiying Tuo, Minglei Yang, Ying Ma and Jin Xu

This study aims to accurately calculate the magnetic field distribution, which is a prerequisite for pre-design and optimization of electromagnetic performance. Accurate…

Abstract

Purpose

This study aims to accurately calculate the magnetic field distribution, which is a prerequisite for pre-design and optimization of electromagnetic performance. Accurate calculation of magnetic field distribution is a prerequisite for pre-design and optimization.

Design/methodology/approach

This paper proposes an analytical model of permanent magnet machines with segmented Halbach array (SHA-PMMs) to predict the magnetic field distribution and electromagnetic performance. The field problem is divided into four subdomains, i.e. permanent magnet, air-gap, stator slot and slot opening. The Poisson’s equation or Laplace’s equation of magnetic vector potential for each subdomain is solved. The field’s solution is obtained by applying the boundary conditions. The electromagnetic performances, such as magnetic flux density, unbalanced magnetic force, cogging torque and electromagnetic torque, are analytically predicted. Then, the influence of design parameters on the torque is explored by using the analytical model.

Findings

The finite element analysis and prototype experiments verify the analytical model’s accuracy. Adjusting the design parameters, e.g. segments per pole and air-gap length, can effectively increase the electromagnetic torque and simultaneously reduce the torque ripple.

Originality/value

The main contribution of this paper is to develop an accurate magnetic field analytical model of the SHA-PMMs. It can precisely describe complex topology, e.g. arbitrary segmented Halbach array and semi-closed slots, etc., and can quickly predict the magnetic field distribution and electromagnetic performance simultaneously.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering , vol. 41 no. 1
Type: Research Article
ISSN: 0332-1649

Keywords

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