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Article
Publication date: 5 September 2016

Yunjuan Liu and Dongsheng Chen

Since it has been regarded as an effective method to evaluate clothing pressure comfort with physiological and psychological techniques the purpose of this paper is to examine the…

Abstract

Purpose

Since it has been regarded as an effective method to evaluate clothing pressure comfort with physiological and psychological techniques the purpose of this paper is to examine the effect on people s inhibition ability caused by the oppression from clothing on the body through event-related potentials (ERPs). A trial application of ERPs technology was made to evaluate clothing pressure comfort and investigate the relationship between some physical indexes of brain wave and clothing pressure. This research would also reveal the influence of clothing pressure on the thinking ability and mental activity of young women.

Design/methodology/approach

Stroop color-naming task was utilized to test the inhibition ability of participants. In the present research, some components of ERPs (e.g. N1, P2, N2 and N450) and behavioral indexes (RTs, and errors rates) were detected to verify the change of physiology and psychology caused by the pressure imposed by girdle on the body.

Findings

At behavioral level RTs were slower for the group under pressure rather than pressure-free group with no significant difference in errors rate between the two groups. Based on the early component statistics of ERPs the Stroop effects of both groups were similar. Besides there was no prominent difference in the latencies and amplitudes of N1, P2 and N2 components except the N450 components. The inhibition ability of young women who had worn girdle for 8 hours decreased causing them unable to make a timely response and thus affecting their attentiveness and executive ability.

Originality/value

This study would clarify that it is feasible to evaluate clothing pressure comfort with ERPs as a physiological technique, and enrich relative methods.

Details

International Journal of Clothing Science and Technology, vol. 28 no. 5
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 2 April 2019

Xiaohong Yuan, Qufu Wei, Huizhen Ke, Zujian Huang and Dongsheng Chen

The purpose of this paper is to prepare structural colors of fabrics coated with Silver/Zinc Oxide (Ag/ZnO) composite films by magnetron sputtering and analyze the relationship…

Abstract

Purpose

The purpose of this paper is to prepare structural colors of fabrics coated with Silver/Zinc Oxide (Ag/ZnO) composite films by magnetron sputtering and analyze the relationship between the colors and the thickness of Zinc Oxide (ZnO) film in Ag/ZnO composite film and the photocatalytic property of the fabrics coated with Ag/ZnO composite film.

Design/methodology/approach

Ag/ZnO composite films deposited on polyester fabrics were prepared by magnetron sputtering technology. The structural colors of textiles coated with Ag/ZnO composite films and the relationship between the colors and Ag/ZnO composite films were analyzed, and the photocatalytic property of Ag/ZnO composite films was also discussed.

Findings

The results indicated that the colors varied with the thicknesses of the ZnO film in Ag/ZnO composite films. The reactive sputtering time of ZnO film was 5, 8, 10 and 14 min, respectively, and the colors of the corresponding fabrics were purple, blue, blue-green and yellow. Meanwhile, the polyester fabrics coated with Ag/ZnO composite films showed the excellent photocatalytic properties, and silver (Ag) films deposited under the ZnO films in Ag/ZnO composite films could also improve the photocatalytic activities of ZnO films, and the formaldehyde degradation rates was 77.5%, which was higher than the 69.9% for the fabrics coated only with the ZnO film.

Originality/value

The polyester fabrics coated with Ag/ZnO composite films not only created various structural colors using change the thicknesses of the ZnO film, but also achieved the multifuctionality, which will have a broad application prospect in textile fields.

Details

International Journal of Clothing Science and Technology, vol. 31 no. 4
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 5 June 2017

Xiaohong Yuan, Wenzheng Xu, Fenglin Huang, Qingqing Wang, Qufu Wei and Dongsheng Chen

Structural color is more brilliant in color, more resistant to sunshine and will not fade away with time, and more environmental friendly than traditional dyes and pigments. The…

Abstract

Purpose

Structural color is more brilliant in color, more resistant to sunshine and will not fade away with time, and more environmental friendly than traditional dyes and pigments. The purpose of this paper is to prepare structural colors of fabrics coated with Ag/TiO2 composite films by magnetron sputtering, and analyze the relationship between the colors and the thicknesses of TiO2 films in Ag/TiO2 composite films.

Design/methodology/approach

Preparation of Ag/TiO2 composite films by magnetron sputtering and their deposition on textiles were investigated. The chemical compositions and surface morphology of Ag/TiO2 composite films were examined by X-ray photoelectron spectroscopy and scanning electron microscopy, and the structural color of fabric coated with Ag/TiO2 composite film was also analyzed.

Findings

Ag/TiO2 composite films deposited on textile substrate exhibited structural colors, and the bright colors could be adjusted and controlled by the thickness of TiO2 thin films in Ag/TiO2 composite films without any dyes or pigments. By comparing the results of theoretical calculation and experimental results, it was found that the creation of structural colors by the experiment was coincident to the colors by theoretical calculation according to the film interference principle. There was a linear relationship between the thickness of TiO2 film and the wavelength of the structural color.

Originality/value

Compared to traditional coloration by dyes or pigments, the coloration of textile by structural color from Ag/TiO2 composite films prepared by magnetron sputtering was very environmental friendly and simple without water consuming, time consuming and tedious work. Structural colors have great potential applications in textiles in place of traditional dyes and pigments. Furthermore, the textiles coated with Ag/TiO2 composite films have good electrical, optical and magnetic properties, and can be used in apparel, home furnishings and industrial fabrics.

Details

International Journal of Clothing Science and Technology, vol. 29 no. 3
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 1 October 2003

Chen Dongsheng and Zhao Qing

In order to pursue men's suit wear comfort, the basic data on an accurate men's suit comfort analysis with clothing pressure is required. Therefore, in such investigation, it is…

1222

Abstract

In order to pursue men's suit wear comfort, the basic data on an accurate men's suit comfort analysis with clothing pressure is required. Therefore, in such investigation, it is difficult to find out ideal persons as test subjects. In the measuring experiments, we used dummies designed for resuscitation practice to obtain the clothing pressure with both normal standing posture and movement patterns and compared these data with subjects' to give the relationship of clothing pressure between the dummy and subject. The correlation between the measurements with dummies and the subjects' are shown. It turns out that the dummy D1 and D6 are mainly as intended in pressure measurement with normal standing posture. But the dummy D2 and D3 are not. It turns out that the dummy D1 can imitate the human shoulder's movement patterns well, and the dummy D4 and D6 are mainly as intended. But the dummy D2 is not. It turns out that all the dummies have a certain limitation to be placed in clothing pressure measurements. It also shows that instead of subject to use dummy to investigate clothing pressure with both normal standing posture and movement pattern, not only dummy's features such as compression hardness, form and size, but measuring postures are also needed to take into consideration.

Details

International Journal of Clothing Science and Technology, vol. 15 no. 5
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 7 March 2016

Jia Lü, Dongsheng Chen and Yue Sui

The purpose of this paper is to utilize the spontaneous brain potentials as an index to quantifying the consumers’ inner emotions, and propose an objective method to obtain the…

Abstract

Purpose

The purpose of this paper is to utilize the spontaneous brain potentials as an index to quantifying the consumers’ inner emotions, and propose an objective method to obtain the clothing recognitions of consumers by only monitoring brain activities.

Design/methodology/approach

Different styles of men’s casual jacket were studied as a case. The research included four phases: first, stimuli samples were constructed by clustering algorithm. Second, self-report for the perception of stimuli samples were recorded by self-assessment manikin. Third, real-time brain potentials while viewing stimuli samples were recorded and analyzed. Finally, the output data were compared with the classical research achievements of visual evoked emotional ERPs to examine the effectiveness.

Findings

The results indicated significant difference in main effect of different emotional categories which was identified a corresponding relationship between the emotional trigger and the emotional reaction, of which the early components were the typical components that provided the major physiology characteristics for emotional fashion design. The middle components could be used as the assist reference indexes. The negative stimuli were first noticed because its shorter processing times and larger amplitudes. The comparison confirmed that the proposed method was capable of quantifying cognitive activities of consumers by only monitoring brain activities and then transferred the analyzed data to the design references.

Originality/value

The results quantifying the qualities of consumers’ emotional preference for men’ casual jackets based on the neural mechanism of human brain, which could eliminate the systematic biases associated with the uses of words and semantic comprehension in self-report methods. The proposed method may help to enrich and complete the sentimental fashion design for the cognitive experience of consumer oriented. Moreover, it also could be beneficial to optimize design process and improve efficiency and core competitiveness for clothing producers.

Details

International Journal of Clothing Science and Technology, vol. 28 no. 1
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 28 October 2014

Zhouyang Lian, Dongsheng Chen, Wuji Wei, Yongzhang Zhou and Juncheng Jiang

– The purpose of this study was to investigate the reason of G105 coated drill-pipes suffering from washout after drilling for 70000–80000 m.

Abstract

Purpose

The purpose of this study was to investigate the reason of G105 coated drill-pipes suffering from washout after drilling for 70000–80000 m.

Design/methodology/approach

The microstructure, micromorphology and corrosion products near the washout were analyzed by metallurgical microscopy, SEM and EDS.

Findings

Results showed the metallographic microstructure of the material was typical tempered sorbite. No fatigue crack was observed. Drill-pipe washout was caused mainly by the inclusion of MnS in steel because of the excess S and by damaged coating, both of which induced pit nucleation and promoted the pitting corrosion process. The corrosion hole extended from the interior to the exterior, which resulted in the fracturing of the external drill-pipe surface under pressure.

Originality/value

This paper can give practical help to the selection of drill pipe materials in the future.

Details

Anti-Corrosion Methods and Materials, vol. 61 no. 6
Type: Research Article
ISSN: 0003-5599

Keywords

Article
Publication date: 3 August 2015

Yunjuan Liu and Dongsheng Chen

The pressure exerted on the body by clothes is one important factor affecting the comfort of clothing, it is an effective method to evaluate pressure comfort by physiology and…

Abstract

Purpose

The pressure exerted on the body by clothes is one important factor affecting the comfort of clothing, it is an effective method to evaluate pressure comfort by physiology and psychology. The purpose of this paper is to measure, electroencephalography (EEG), an index of brain activity in order to examine the effect on brain activity conditions caused by oppression exerted by clothing on the body.

Design/methodology/approach

EEG power spectrum analysis was conduct to verify the electrophysiological characteristic of brain caused by pressure on the body by girdle.

Findings

Experimental results showed that the intensity of α waves in the pressure condition is decreased compared to the non-pressure condition, and the somatosensory activated by pressure of girdle mainly in occipital, frontal and parietal region of brain.

Originality/value

It was clarified that it is impossible to evaluate the clothes pressure by physiological technique of EEG, this study has enriched methods of evaluation pressure comfort.

Details

International Journal of Clothing Science and Technology, vol. 27 no. 4
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 29 October 2018

David Ahlstrom, Xiaohua Yang, Liang Wang and Changqi Wu

This paper aims to study largely recent aspects of entrepreneurship and innovation in China. It synthesizes the research in the current special issue (SI) of Multinational

2210

Abstract

Purpose

This paper aims to study largely recent aspects of entrepreneurship and innovation in China. It synthesizes the research in the current special issue (SI) of Multinational Business Review (MBR) on this topic. In addition, this paper differs from other work on this topic in examining entrepreneurship and innovation from a more global standpoint with relevant international effects.

Design/methodology/approach

The paper provides an overview of the literature on entrepreneurship, innovation and key related topics such as firm and economic growth, as well as linking this research to related international works. It also summarizes the papers of the SI.

Findings

The authors’ analysis suggests that the study of entrepreneurship and innovation should be placed in the context of a country’s economic development and institutional environment as well as the firm internationalization trajectories and business models. In addition, the authors believe that a good understanding of economic growth in a transition economy like China (which is a key goal of China’s recent emphasis on innovation) is facilitated by understanding the comparative advantages and disadvantages of an economy with respect to the global innovation system.

Originality/value

The authors’ study explores the local-global and parent-subsidiary connectivity and co-evolution of firm strategies and the institutional environment in entrepreneurship and innovation in emerging and transition economies. The authors summarize and synthesize the papers in this SI to provide the results as well as some directions for future research in the domain of entrepreneurship, innovation and new venture creation, which is believed to be a key engine of economic growth in the coming years.

Details

Multinational Business Review, vol. 26 no. 4
Type: Research Article
ISSN: 1525-383X

Keywords

Article
Publication date: 2 September 2014

Yanzhong Wang and Bin Wei

The purpose of this study is to investigate wet multi-disc brake temperature field and optimal oil supply under continuous braking condition. The oil supply of wet multi-disc…

Abstract

Purpose

The purpose of this study is to investigate wet multi-disc brake temperature field and optimal oil supply under continuous braking condition. The oil supply of wet multi-disc brake has a direct impact on the drivability and fuel economy for tracked vehicles. Too small flow will result in the higher temperature and failure of brake while excessive one will lead to slow engagement increasing disengaged torque and the transmission efficiency could decline notably. The optimal oil supply and brake temperature field were obtained in this research.

Design/methodology/approach

This article investigated on the heat dissipation capability and optimal oil supply of the brake by the means of CFX model. The working condition was continuous braking and the lubricating and cooling factors were included in the model.

Findings

That the complex trends with increased oil flow is inconsistent with the traditional formula in which the effects of grooves were neglected. The fitting curve of optimal oil supply can predict various needed oil flow in various rotating speed and it provides a theoretical guidance for oil supply design.

Originality/value

Traditional empirical formula of heat transfer coefficient and Reynolds equation solved by different methods could be difficult to deal with the complex boundary conditions of wet multi-disc brake. CFX model can solve the problem of complex boundary condition. The optimal oil supply curve can provide a theoretical guidance for oil supply design.

Details

Industrial Lubrication and Tribology, vol. 66 no. 6
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 6 November 2018

Zhiqun Zhu

The purpose of this paper is to analyze the rationale, strategies and significance of Chinese investment in the USA and its impact on US–China relations.

Abstract

Purpose

The purpose of this paper is to analyze the rationale, strategies and significance of Chinese investment in the USA and its impact on US–China relations.

Design/methodology/approach

Through empirical analysis, this preliminary study examines the rationale, strategies and impact of Chinese investment in the USA.

Findings

Chinese investment has promoted economic growth in both countries, but it faces several challenges including security concerns and cultural clashes.

Originality/value

This paper is one of the first, comprehensive studies of the topic.

Details

Asian Education and Development Studies, vol. 7 no. 4
Type: Research Article
ISSN: 2046-3162

Keywords

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