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Article
Publication date: 5 September 2018

Ying Huang, Chao Hao, Jian Liu, Xiaohui Guo, Yangyang Zhang, Ping Liu, Caixia Liu, Yugang Zhang and Xiaoming Yang

The purpose of this study is to present a highly stretchable and flexible strain sensor with simple and low cost of fabrication process and excellent dynamic…

Abstract

Purpose

The purpose of this study is to present a highly stretchable and flexible strain sensor with simple and low cost of fabrication process and excellent dynamic characteristics, which make it suitable for human motion monitoring under large strain and high frequency.

Design/methodology/approach

The strain sensor was fabricated using the rubber/latex polymer as elastic carrier and single-walled carbon nanotubes (SWCNTs)/carbon black (CB) as a synergistic conductive network. The rubber/latex polymer was pre-treated in naphtha and then soaked in SWCNTs/CB/silicon rubber composite solution. The strain sensing and other performance of the sensor were measured and human motion tracking applications were tried.

Findings

These strain sensors based on aforementioned materials display high stretchability (500 per cent), excellent flexibility, fast response (approximately 45 ms), low creep (3.1 per cent at 100 per cent strain), temperature and humidity independence, superior stability and reproducibility during approximately 5,000 stretch/release cycles. Furthermore, the authors used these composites as human motion sensors, effectively monitoring joint motion, indicating that the stretchable strain sensor based on the rubber/latex polymer and the synergetic effects of mixed SWCNTs and CB could have promising applications in flexible and wearable devices for human motion tracking.

Originality/value

This paper presents a low-cost and a new type of strain sensor with excellent performance that can open up new fields of applications in flexible, stretchable and wearable electronics, especially in human motion tracking applications where very large strain should be accommodated by the strain sensor.

Details

Sensor Review, vol. 39 no. 2
Type: Research Article
ISSN: 0260-2288

Keywords

Content available
Article
Publication date: 5 December 2016

Caixia Liu and Jinhwan Hong

Chinese consumers’ cross-border internet shopping, so called “haitao” is an emerging popular trend in China. Haitao can be understood as service innovation process because…

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7582

Abstract

Purpose

Chinese consumers’ cross-border internet shopping, so called “haitao” is an emerging popular trend in China. Haitao can be understood as service innovation process because it creates new market spaces and provides differentiated values for Chinese customers.

Design/methodology/approach

This study aims to explore the service innovation strategies and success factors of haitao business in the Chinese market. The authors selected two successful haitao sites of Amazon.cn and Gmarket.co.kr, as representatives of a global player and a niche player, and conducted a comparative case study to analyze their service innovation strategies and key success factors.

Findings

This comparative case analysis based on value chain framework revealed some common success factors such as trust, advanced system and alliances as well as their service innovation efforts. Amazon has advantages such as efficient logistics system and global sourcing, whereas Gmarket has advantages such as product category, sales promotions, and payment system.

Originality/value

This study provides some implications for managers with localization, alliances and platform strategies.

Details

Asia Pacific Journal of Innovation and Entrepreneurship, vol. 10 no. 1
Type: Research Article
ISSN: 2071-1395

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Article
Publication date: 19 September 2019

Caixia Chen, Tongyu Gu, Yuru Cai and Yixiong Yang

The purpose of this paper is to develop a novel research model to examine the relationship among information sharing (IS), supply chain integration (SCI), operational…

Abstract

Purpose

The purpose of this paper is to develop a novel research model to examine the relationship among information sharing (IS), supply chain integration (SCI), operational performance (OP) and business performance (BP) in the fashion supply chains.

Design/methodology/approach

A survey of 247 executives from Chinese fashion brand firms was conducted and the data were analyzed to investigate how IS affects the organizational BP. Structural equation modeling (SEM) was applied to study the relationship among IS, SCI, OP and BP.

Findings

The empirical research results indicate that IS is critical to enhance the SCI and OP, and both SCI and OP exert mediating effects on BP of fashion brands. This result also reveals constructive suggestions that allow fashion brands to strengthen their SCI and OP, as well as BP.

Research limitations/implications

Multiple data sources were applied to develop the sampling frame, and respondents were selected (according to their experience and position) to ensure they had the knowledge and expertise to provide valid response. However, this could not guarantee the adequacy of the sample. This limitation is compounded by the reliance on a simple respondent per firm, which precludes testing for inter-rater reliability.

Practical implications

The empirical findings provide an enhanced understanding of the relationship among IS, SCI, OP and BP in Chinese fashion brand settings. The research results will help fashion brands to improve supply chain efficiency and enhance company performance.

Originality/value

Although previous studies have realized that the value of IS varies in different industries, few have specifically explored the impact on the fashion industry characterized by short life cycles, high volatility, low predictability and high impulse purchasing. To fill this knowledge gap, the present study employed a questionnaire survey and SEM techniques to explore the relationship among IS, SCI, OP and BP in the fashion supply chain. Comprehending the impact mechanism of IS on organizational performance can provide useful management insights into the development of effective strategies that allow enterprise to improve BP.

Details

Journal of Enterprise Information Management, vol. 32 no. 6
Type: Research Article
ISSN: 1741-0398

Keywords

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Article
Publication date: 6 November 2017

Changsheng Wang, Yang Wang, Caixia Yang, Xiangkui Zhang and Ping Hu

Severe accuracy loss may occur when finite element comes to the distorted mesh model, and the calculation may fail when element mesh degenerates into concave quadrangle or…

Abstract

Purpose

Severe accuracy loss may occur when finite element comes to the distorted mesh model, and the calculation may fail when element mesh degenerates into concave quadrangle or the element boundary is curved. This is a valuable research topic, and many efforts have been made to develop new finite element models. This paper aims to propose two quasi-conforming membrane elements based on the assumed stress quasi-conforming method and fundamental analytical solutions to overcome the difficulties.

Design/methodology/approach

First, the fundamental analytical solutions which satisfied both the equilibrium and the compatibility relations of plane stress problem are used as the initial assumed stress of both elements. Then, the stress-function matrices are used as the weighted functions to weaken the strain-displacement equations, which makes only string-net functions on the boundary of the elements are needed in the process of strain integration. Finally, boundary interpolation functions expressed by unknown nodal displacement parameters are adopted to the process of strain integration.

Findings

The formulations of both elements are simple and concise, and the elements are immune to the distorted mesh, which can be used to the mesh shape degenerates into a triangle or concave quadrangle and curved-side element. The results of the numerical tests have proven that the new models possess high accuracy.

Originality/value

New formulations of quasi-conforming method are described is detail, and the new strategy exhibits advantages of both analytical and discrete methods.

Details

Engineering Computations, vol. 34 no. 8
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 8 August 2016

Fang Wang, Lu Xu and Caixia Wang

Preschoolers and their inter-generational parents are the main users of modern urban residential outdoor space. To design and build appropriate outdoor space, it is…

Abstract

Purpose

Preschoolers and their inter-generational parents are the main users of modern urban residential outdoor space. To design and build appropriate outdoor space, it is necessary to understand the two groups’ psychological and behavioral needs in depth. The paper aims to discuss this issue.

Design/methodology/approach

By means of literature reviews, field surveys, questionnaires, and interviews, this study addresses the psychological, behavioral, neighborhood conversation, and space use characteristics of preschoolers and their inter-generational parents in the residential quarters of Haidian District in Beijing. This paper investigates the safety, interests, micro-climate appropriateness, supporting accompanying behavior, and promoting neighborhood conversation as the design strategies for residential outdoor space.

Findings

The findings suggest that children’s wills are dominant in choosing activity space, while the duration of stay is decided by inter-generational parents; appropriateness for children’s use is the most significant indicator for evaluating satisfaction of outdoor space; safety is the first rule in outdoor space design; and the design of details in outdoor space and facilities needs to be strengthened.

Research limitations/implications

Some preliminary conclusions have been concluded in this research while some deficiencies still exist. For example, quantitative research method and data processing method need to be deepened and studied continually in the following research; also, the research defines the investigation elements based on literature reading and individual field research, which remains to be verified and deepened in the future.

Practical implications

This research paid attention to usage experience in residential quarters so as to get rid of the pursuit of beauty in form in the planning and design strategies for residential quarters, proper care for youth and seniors, promote community vitality, enhance the shared living environment, and promote community association. This research can arouse the attention to children and the elderly in subsequent residential quarters and urban research. It is a very important field to study the behavior characteristics of children and the elderly and then study the urban space that is suitable for them.

Social implications

Planning and design strategies for residential quarters should be explored from the perspectives of the correlated group of preschoolers and their inter-generational parents – the group of people who most frequently use residential outdoor space. This research paid attention to usage experience in residential quarters so as to get rid of the pursuit of beauty in form in the planning and design strategies for residential quarters, proper care for youth and seniors, promote community vitality, enhance the shared living environment, and promote community association. This research can arouse the attention to children and the elderly in subsequent residential quarters and urban research.

Originality/value

This research is of great significance, in caring the young and the old, building up communities’ vitality, enhancing living environment, and promoting community association, to explore planning and design strategies for residential quarters from the perspective of the correlated group of preschoolers and inter-generational parents and the group of people who uses the residential quarters’ space most frequently.

Details

International Journal of Tourism Cities, vol. 2 no. 3
Type: Research Article
ISSN: 2056-5607

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Article
Publication date: 21 February 2020

Changsheng Wang, Xiao Han, Caixia Yang, Xiangkui Zhang and Wenbin Hou

Numerous finite elements are proposed based on analytical solutions. However, it is difficult to find the solutions for complicated governing equations. This paper aims to…

Abstract

Purpose

Numerous finite elements are proposed based on analytical solutions. However, it is difficult to find the solutions for complicated governing equations. This paper aims to present a novel formulation in the framework of assumed stress quasi-conforming method for the static and free vibration analysis of anisotropic and symmetric laminated plates.

Design/methodology/approach

Firstly, an initial stress approximation ruled by 17 parameters, which satisfies the equilibrium equations is derived to improve the performance of the constructed element. Then the stress matrix is treated as the weighted function to weaken the strain-displacement equations. Finally, the Timoshenko’s laminated composite beam functions are adopted as boundary string-net functions for strain integration.

Findings

Several numerical examples are presented to show the performance of the new element, and the results obtained are compared with other available ones. Numerical results have proved that the new element is free from shear locking and possesses high accuracy for the analysis of anisotropic and symmetric laminated plates.

Originality/value

This paper proposes a new QC element for the static and free vibration analysis of anisotropic and symmetric laminated plates. In contrast with the complicated analytical solutions of the equilibrium equations, an initial stress approximation ruled by 17 parameters is adopted here. The Timoshenkos laminated composite beam functions are introduced as boundary string-net functions for strain integration. Numerical results demonstrate the new element is free from shear locking and possesses high accuracy for the analysis of anisotropic and symmetric laminated plates.

Details

Engineering Computations, vol. 37 no. 6
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 12 October 2012

Zhang Yong, Lu Yingjin and Jiang Xianglan

The purpose of this paper is to study the pricing problem of product transfer price under the channel advantages; determine the structure models of optimal transfer price…

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829

Abstract

Purpose

The purpose of this paper is to study the pricing problem of product transfer price under the channel advantages; determine the structure models of optimal transfer price expectation; and compare the differences in pricing of different pricing dominant parties.

Design/methodology/approach

Uncertain factors are introduced into dynamic pricing mathematics models; production and storage models are combined; the method of functional analysis is used to solve transfer pricing question under different advantage conditions; and price matching models in supply chain integration are put forth.

Findings

There is a proportional relationship between the optimal transfer price expectation and price fluctuation. The party which has channel advantages will gain relatively more profit, but the maximum revenue can be obtained only in the supply chain integration.

Research limitations/implications

There is no appropriate empirical data to verify the models.

Practical implications

The paper provides pricing reference method to monopoly competitive enterprises on different stages. The matching pricing models based on E‐commerce can deal with the price deviation caused by goal difference and random factors automatically.

Originality/value

The paper considers production and inventory pricing, reflects the influence of the whole pricing factors under different channel advantages, and puts forth dynamic matching pricing models and algorithm under the E‐commerce circumstances.

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Article
Publication date: 23 October 2015

Shu Yi, Lin Xiao, Yong Zhang, Dujuan Duan and Maksim G. Blokhin

This paper describes the organic geochemical characteristics and their roles on barium enrichment in the No. 2 Coal from Huanglong Jurassic Coalfield, China. A total of 18…

Abstract

This paper describes the organic geochemical characteristics and their roles on barium enrichment in the No. 2 Coal from Huanglong Jurassic Coalfield, China. A total of 18 bench samples were taken from Huangling Mine 2. The average content of barium (3701 mg/kg) was about 23 times higher than that of common world coals. Terrestrial higher plants were the main coal-forming parent material. Relying on the parameters of OEP, Pr/Ph and so on, there is little correlation between organic geochemical characteristics and barium enrichment. Therefore, organic material has little influence on the process of coal-forming and the enrichment of barium.

Details

World Journal of Engineering, vol. 12 no. 5
Type: Research Article
ISSN: 1708-5284

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Article
Publication date: 10 August 2021

Syed Jamal Shah and Cheng Huang

This study aims to investigate the relationship between person-role conflict, psychological capital and emotional exhaustion. Specifically, the research explores how…

Abstract

Purpose

This study aims to investigate the relationship between person-role conflict, psychological capital and emotional exhaustion. Specifically, the research explores how person-role conflict magnified due to daily contact with COVID-19 carriers leads doctors and nurses to experience emotional exhaustion. Moreover, psychological capital function as an explanatory mechanism between stressor strain relationships has also been tested.

Design/methodology/approach

The study results are based on three months of lagged data conducted from the sample of 347 frontline physicians and nurses who provide treatment and care to infected people. To test direct, indirect and total effect, the author's used PROCESS Macro.

Findings

The results suggested that person-role conflict reduces state-like psychological capital and increases emotional exhaustion through reduced psychological capital. Results aligned with the model's expectations in that psychological capital mediated the relationship between person-role conflict and emotional exhaustion, and the mediation was partial.

Originality/value

This paper is the first one that tested the link between person-role conflict and emotional exhaustion. Moreover, up till now, no study has examined the mediating role of psychological capital in the relationship between person-role conflict and emotional exhaustion. Finally, in the context of the contagion outbreak, this is the preliminary effort that validated the resource loss cycle principle of conservation of resource theory.

Details

International Journal of Conflict Management, vol. 32 no. 5
Type: Research Article
ISSN: 1044-4068

Keywords

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Article
Publication date: 1 March 2018

Yung Sin Chong, Keat Hoe Yeoh, Pei Ling Leow and Pei Song Chee

This paper aims to report a stretchable piezoresistive strain sensor array that can detect various static and dynamic stimuli, including bending, normal force, shear…

Abstract

Purpose

This paper aims to report a stretchable piezoresistive strain sensor array that can detect various static and dynamic stimuli, including bending, normal force, shear stress and certain range of temperature variation, through sandwiching an array of conductive blocks, made of multiwalled carbon nanotubes (MWCNTs) and polydimethylsiloxane (PDMS) composite. The strain sensor array induces localized resistance changes at different external mechanical forces, which can be potentially implemented as electronic skin.

Design/methodology/approach

The working principle is the piezoresistivity of the strain sensor array is based on the tunnelling resistance connection between the fillers and reformation of the percolating path when the PDMS and MWCNT composite deforms. When an external compression stimulus is exerted, the MWCNT inter-filler distance at the conductive block array reduces, resulting in the reduction of the resistance. The resistance between the conductive blocks in the array, on the other hand, increases when the strain sensor is exposed to an external stretching force. The methodology was as follows: Numerical simulation has been performed to study the pressure distribution across the sensor. This method applies two thin layers of conductive elastomer composite across a 2 × 3 conductive block array, where the former is to detect the stretchable force, whereas the latter is to detect the compression force. The fabrication of the strain sensor consists of two main stages: fabricating the conducting block array (detect compression force) and depositing two thin conductive layers (detect stretchable force).

Findings

Characterizations have been performed at the sensor pressure response: static and dynamic configuration, strain sensing and temperature sensing. Both pressure and strain sensing are studied in terms of the temporal response. The temporal response shows rapid resistance changes and returns to its original value after the external load is removed. The electrical conductivity of the prototype correlates to the temperature by showing negative temperature coefficient material behaviour with the sensitivity of −0.105 MΩ/°C.

Research limitations/implications

The conductive sensor array can potentially be implemented as electronic skin due to its reaction with mechanical stimuli: compression and stretchable pressure force, strain sensing and temperature sensing.

Originality/value

This prototype enables various static and dynamic stimulus detections, including bending, normal force, shear stress and certain range of temperature variation, through sandwiching an array of conductive blocks, made of MWCNT and PDMS composite. Conventional design might need to integrate different microfeatures to perform the similar task, especially for dynamic force sensing.

Details

Sensor Review, vol. 38 no. 4
Type: Research Article
ISSN: 0260-2288

Keywords

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