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Article
Publication date: 19 June 2017

Qi Wang, Pengcheng Zhang, Jianming Wang, Qingliang Chen, Zhijie Lian, Xiuyan Li, Yukuan Sun, Xiaojie Duan, Ziqiang Cui, Benyuan Sun and Huaxiang Wang

Electrical impedance tomography (EIT) is a technique for reconstructing the conductivity distribution by injecting currents at the boundary of a subject and measuring the…

Abstract

Purpose

Electrical impedance tomography (EIT) is a technique for reconstructing the conductivity distribution by injecting currents at the boundary of a subject and measuring the resulting changes in voltage. Image reconstruction for EIT is a nonlinear problem. A generalized inverse operator is usually ill-posed and ill-conditioned. Therefore, the solutions for EIT are not unique and highly sensitive to the measurement noise.

Design/methodology/approach

This paper develops a novel image reconstruction algorithm for EIT based on patch-based sparse representation. The sparsifying dictionary optimization and image reconstruction are performed alternately. Two patch-based sparsity, namely, square-patch sparsity and column-patch sparsity, are discussed and compared with the global sparsity.

Findings

Both simulation and experimental results indicate that the patch based sparsity method can improve the quality of image reconstruction and tolerate a relatively high level of noise in the measured voltages.

Originality/value

EIT image is reconstructed based on patch-based sparse representation. Square-patch sparsity and column-patch sparsity are proposed and compared. Sparse dictionary optimization and image reconstruction are performed alternately. The new method tolerates a relatively high level of noise in measured voltages.

Details

Sensor Review, vol. 37 no. 3
Type: Research Article
ISSN: 0260-2288

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Article
Publication date: 12 August 2021

Van Thac Dang, Jianming Wang, Hoang Viet Nguyen, Quang Huy Nguyen and Ninh Nguyen

Previous research has yielded mixed results on the relationship between consumer perception and purchase intention towards organic food products. Although the prior…

Abstract

Purpose

Previous research has yielded mixed results on the relationship between consumer perception and purchase intention towards organic food products. Although the prior literature has widely applied planned behaviour theory, using a single theoretical approach often provides limited understanding of organic food consumption. This study builds upon consumer perception and social cognitive theories to examine the effects of perceived food healthiness and environmental consciousness on the purchase intention of organic drinking products. The current research also assesses the mediating role of consumer extrinsic motivation and moderating role of corporate social responsibility (CSR) beliefs in these effects.

Design/methodology/approach

A survey method was applied to collect data from 606 consumers from different food retailers in Vietnam. Data were analysed using multivariate analysis techniques, such as structural equation modelling and bootstrap analysis.

Findings

Results of hypothesis testing support the predictive ability of perception and social cognitive theories in explaining consumers' perceptions, motivation and behavioural intention towards organic drinking products. Furthermore, results provide evidence for the moderating effect of CSR beliefs on the relationship between consumer extrinsic motivation and purchase intention.

Originality/value

This study may be amongst the first that explains consumption of organic drinking products from the perspectives of consumer perception and social cognitive theories. It provides a unique research model that explains the influence of perceived food healthiness and environmental consciousness on purchase intention of organic drinking products with the mediating role of consumer extrinsic motivation and moderating role of CSR beliefs. The current research provides fresh insights into the consumption of organic drinking products in an emerging market based on a mediated moderation mechanism, which has been limited in the prior literature.

Details

British Food Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0007-070X

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Article
Publication date: 11 July 2020

Van Thac Dang, Ninh Nguyen and Jianming Wang

Anchored on social trust theory, social identity theory and signalling theory, this study investigates the process of how consumers respond to online retailers' corporate…

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1417

Abstract

Purpose

Anchored on social trust theory, social identity theory and signalling theory, this study investigates the process of how consumers respond to online retailers' corporate social responsibility (CSR).

Design/methodology/approach

Following the hypo-deductive research design, a unique model was developed to link online retailers' CSR with consumer purchase intention through brand identification and word of mouth (WOM). This model was subsequently tested and validated by conducting an online survey to 239 customers of a major online retailer in China, that is, JD.com.

Findings

Analysis using structural equation modelling demonstrates that online retailers' CSR is positively associated with consumer purchase intention, and brand identification positively mediates such an association. In addition, WOM exhibits a mediating effect on the relationship between perceived online retailers' CSR and consumer purchase intention and between brand identification and consumer purchase intention.

Practical implications

Online retailers must endeavour to employ CSR as a strategy to enhance consumer purchase intention and behaviour. Moreover, they should develop communication programmes that highlight their engagement in CSR activities to improve their brand image and facilitate consumers' positive WOM.

Originality/value

To the best of the researchers' knowledge, this study is the first to examine the mediating roles of brand identification and WOM in the relationship between online retailers' CSR and customer purchase intention. Furthermore, this study extends current knowledge about online retailers' CSR and its potential impact in emerging economies by focussing on the context of China.

Details

International Journal of Retail & Distribution Management, vol. 48 no. 12
Type: Research Article
ISSN: 0959-0552

Keywords

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Article
Publication date: 26 January 2021

Van Thac Dang, Ninh Nguyen and Jianming Wang

A review of 67 articles in the indoor environmental quality (IEQ) literature published from 2010 to 2020 reveals that none of prior studies have determined the IEQ of…

Abstract

Purpose

A review of 67 articles in the indoor environmental quality (IEQ) literature published from 2010 to 2020 reveals that none of prior studies have determined the IEQ of physical retailers and its impact on consumers. To fill such a gap, this study investigates the influence of physical retailers' IEQ on consumer purchase intention. The mediating roles of hedonic experience and perceived brand value (PBV) in this relationship are also determined. Furthermore, the moderating effect of perceived service quality (PSQ) on the link between physical retailers' IEQ and PBV is clarified in this study.

Design/methodology/approach

This study uses structural equation modeling (SEM) to analyze a sample data of 996 consumers in China.

Findings

Results show that physical retailers' IEQ has a positive impact on consumer purchase intention. Hedonic experience mediates the link between IEQ and purchase intention. PBV also mediates the relationship between IEQ and purchase intention and that between hedonic experience and purchase intention. In addition, PSQ moderates the relationship between IEQ and PBV.

Originality/value

To the best of the authors’ knowledge, this study is the first to determine the impact of IEQ on consumers in the physical retailer context. Specifically, this study enriches our knowledge about the relationship between physical retailers' IEQ and consumer purchase intention with the mediating and moderating mechanisms of hedonic experience, PBV and PSQ. The findings fill the research gaps in the IEQ literature that has ignored the impact of IEQ on consumers' perception and behavioral intention in the physical retailer context. Furthermore, this research provides evidence for retailer managers to understand and improve physical stores' IEQ.

Details

International Journal of Retail & Distribution Management, vol. 49 no. 6
Type: Research Article
ISSN: 0959-0552

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Article
Publication date: 1 December 1997

Qinmeng Wang, Jianming Wang and Jin Zhang

Discusses the application of the fixed interface modal synthesis technique and the quasi‐ periodically symmetric feature of the shrouded blades and disc system for…

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499

Abstract

Discusses the application of the fixed interface modal synthesis technique and the quasi‐ periodically symmetric feature of the shrouded blades and disc system for analysing the coupling vibration characteristic of a system which has freely slipping contact surfaces. This technique has led to the establishment of an entirely new dynamic analysis method. With this method, the scale of calculation required has been greatly reduced, relieving the demand on CPU time and storage capacity while still ensuring sufficient accuracy of dynamic analysis.

Details

Aircraft Engineering and Aerospace Technology, vol. 69 no. 6
Type: Research Article
ISSN: 0002-2667

Keywords

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Article
Publication date: 1 November 2000

Renfang Wang, Jianming Wu and Jianzhong Wu

Describes the planning and implementation of a quality service programme in Shanghai’s prestigious new public library. This is part of a city‐wide initiative to develop…

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827

Abstract

Describes the planning and implementation of a quality service programme in Shanghai’s prestigious new public library. This is part of a city‐wide initiative to develop quality service in organisations in the private and public sectors. The organisation and administration of the library’s programme is described, including the involvement of library staff at all levels, the development of service norms, and the ways by which the staff were encouraged to deliver quality service. The experience was transferred to other librarians. The outcomes of the programme are described.

Details

Library Management, vol. 21 no. 8
Type: Research Article
ISSN: 0143-5124

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Article
Publication date: 29 January 2020

Zhe Cheng, Yongjian Ke, Zhenshan Yang, Jianming Cai and Huanming Wang

As an innovation model for infrastructure and public service delivery, public–private partnership (PPP) has been widely adopted around the world. The knowledge spillover…

Abstract

Purpose

As an innovation model for infrastructure and public service delivery, public–private partnership (PPP) has been widely adopted around the world. The knowledge spillover effect and policy diffusion mechanism have played an important role in promoting the development of PPP in the context of globalization. A comparative evaluation of the policy and management of PPP in different countries will help to understand the development of PPP, provide decision-making reference for PPP policy embedded with specific national conditions of each country, and also contribute to the global PPP knowledge body.

Design/methodology/approach

Based on the principle of comparability and representativeness, this study selected three countries, namely, China, India, and the United Kingdom for comparative analysis. This study first introduced the policy process and key institutions of PPP in three countries. Secondly, a comparative analysis of the development characteristics and application of PPP was conducted based on the official database of three countries. Finally, the differences, influencing factors and development trends of international PPP development were analyzed based on the comparative research results, and suggestions for PPP policy and management were put forward.

Findings

The research results indicate the development fluctuation and unbalanced spatial distribution of PPPs are a common phenomenon in the three countries. The UK has a significant impact on the policy and development of PPP in other countries. However, under the combined influence of factors such as economic, urbanization, political regime and social culture, there are significant differences in the PPP institution, application, and project characteristics in various countries. Due to international exchanges and knowledge spillovers, as well as the promotion of intermediaries, the development of PPP worldwide tends to converge.

Practical implications

Through conducting an international comparison of PPPs based on project data, this study provides a detailed and visualized overview of PPPs and a better understanding of PPP policy and management in different countries. The findings will be of interest to PPP investors, officers, practitioners, policymakers, researchers, and analysts. It enriches the portrait of global PPP market research, helps governments to improve the design of PPP institutions and policies, and provides references for decision-making of international investors when stepping into a new market.

Originality/value

This study is the first attempt to systematically compare and analyze the global PPP difference and development trend based on PPP project databases of different countries. Different from previous PPP comparative research based on perception data, the project data-based comparative analysis in this study is helpful to understand the characteristics, interrelations, and trends of global PPP development and enrich the existing PPP knowledge body. This study also proposes that it is possible to establish a global PPP knowledge community in the context of globalization and global production network.

Details

Engineering, Construction and Architectural Management, vol. 27 no. 6
Type: Research Article
ISSN: 0969-9988

Keywords

Content available
Article
Publication date: 28 April 2020

Tuotuo Qi, Tianmei Wang, Jianming Zhu and Ruyu Bai

The encrypted money market has attracted the attention of investors all over the world. Among the encrypted currency, bitcoin is undoubtedly the most popular. Because…

Abstract

Purpose

The encrypted money market has attracted the attention of investors all over the world. Among the encrypted currency, bitcoin is undoubtedly the most popular. Because blockchain technology is the crucial support of bitcoin, exploring the relationship between bitcoin and the blockchain index is necessary.

Design/methodology/approach

This paper uses the Granger causality test to explore the correlation between bitcoin and the blockchain index. Furthermore, their volatility is analyzed by a GARCH-class model.

Findings

The results show that no significant correlation exists between bitcoin and the blockchain index; external shocks aggravate the volatility of bitcoin and the blockchain index, and the volatility has a certain degree of sustainability; and blockchain index has obvious leverage, namely, its decline has a stronger impact.

Originality/value

The volatility of bitcoin and the blockchain index is crucial for investors.

Details

International Journal of Crowd Science, vol. 4 no. 2
Type: Research Article
ISSN: 2398-7294

Keywords

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Article
Publication date: 7 August 2017

Jianming Zhang, Pan Wang, Chenjun Lu and Yunqiao Dong

The purpose of this paper is to preset a spherical element subdivision method for the numerical evaluation of nearly singular integrals in three-dimensional (3D) boundary…

Abstract

Purpose

The purpose of this paper is to preset a spherical element subdivision method for the numerical evaluation of nearly singular integrals in three-dimensional (3D) boundary element method (BEM).

Design/methodology/approach

In this method, the source point is first projected to the tangent plane of the element. Then two cases are considered: the projection point is either inside or outside the element. In both cases, the element is subdivided into a number of patches using a sequence of spheres with decreasing radius.

Findings

With the proposed method, the patches obtained are automatically refined as they approach the projection point and each patch of the integration element is “good” in shape and size for standard Gaussian quadrature. Therefore, all kinds of nearly singular boundary integrals on elements of any shape and size with arbitrary source point location related to the element can be evaluated accurately and efficiently.

Originality/value

Numerical examples for planar and slender elements with various relative location of the source point are presented. The results demonstrate that our method has much better accuracy, efficiency and stability than conventional methods.

Details

Engineering Computations, vol. 34 no. 6
Type: Research Article
ISSN: 0264-4401

Keywords

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Article
Publication date: 1 June 2009

Zhang Feifei, Cai Jianming and Liu Gang

In Beijing, urban agriculture (UA) experienced a corkscrew development with its role changing in decades: It has evolved from the purely production mode to…

Abstract

In Beijing, urban agriculture (UA) experienced a corkscrew development with its role changing in decades: It has evolved from the purely production mode to multi-functional urban agriculture, fulfilling both social and ecological demands. At present, the practice of UA as well as the number of rural to urban migrants is growing rapidly in peri-urban Beijing. Through Multi-stakeholder Process for Action planning and Policy Design (MPAP) methodology and four in-depth case studies, we can see that UA activities are playing very important roles in reshaping peri-urban Beijing. Socially, UA induces the emergence of new migrant communities. While migrants rebuild their social network, they are changed by the city as well, which has also changed the local community. The new comers are on their way to creating a new balance. Physically, urban and peri-urban farmland limits urban sprawl, supplies agricultural products for everyday life, and reserves urban green spaces for recreation and leisure for citizens in Beijing, which has changed the landscape and land use and land cover (LUCC) pattern greatly. Under Beijing's land policy, the concentric configuration spatial allocation through multi-functional UA is formed, which at the same time due to migrants' UA activities are creating harmful and low efficient land use pattern which should be of concern.

Details

Open House International, vol. 34 no. 2
Type: Research Article
ISSN: 0168-2601

Keywords

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