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1 – 10 of 20Zhaopeng Xia, Jianyong Yu, Longdi Cheng, Lifang Liu and Feiyan Wang
Jute fibre, a natural composite of cellulose, hemicellulose and lignin, occupies the second place to cotton in economic importance. Recently many attempts have been made to…
Abstract
Jute fibre, a natural composite of cellulose, hemicellulose and lignin, occupies the second place to cotton in economic importance. Recently many attempts have been made to produce fine jute blended yarn with other textile fibres. In this paper, the two types of jute/cotton blended yarn whose jute and cotton fibres were respectively blended at the opening and drawing stages were spun by using the ring spinning technology. The tensile properties of both blended yarn at gauge lengths from 150 mm to 500 mm were investigated, and the evenness and imperfections for both blended yarn were also evaluated. The results show that the draw frame blended yarn was of better quality than the opener blended yarn. The breaking tenacities of both blended yarn increased with the decrease in the gauge length. The equations derived from two-parameter Weibull distribution and based on experimental strength at length of 300 mm can predict the breaking strength of both blended yarn accurately. The scale effect study indicates that the opener blended yarn strength decreased more sharply than draw frame blended yarn as the gauge length increased.
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Lifang Wu, Zechao Liu, Yupeng Guan, Kejian Cui, Meng Jian, Yuanyuan Qin, Yandong Li, Feng Yang and Tianqin Yang
This paper aims to address the problem of uncertain product quality in digital light processing (DLP) three-dimensional (3D) printing, a scheme is proposed to qualitatively…
Abstract
Purpose
This paper aims to address the problem of uncertain product quality in digital light processing (DLP) three-dimensional (3D) printing, a scheme is proposed to qualitatively estimate whether a layer is printed with the qualified quality or not cured .
Design/methodology/approach
A thermochromic pigment whose color fades at 45°C is prepared as the indicator and it is mixed with the resin. A visual surveillance framework is proposed to monitor the visual variation in a period of the entire curing process. The exposure region is divided into 30 × 30 sub-regions; gray-level variation curves (curing curves) in all sub-regions are classified as normal or abnormal and a corresponding printing control strategy is designed to improve the percentage of qualified printed objects.
Findings
The temperature variation caused by the releasing reaction heat on the exposure surface is consistent in different regions under the homogenized light intensity. The temperature in depth begins to rise at different times. The temperature in the regions near the light source rises earlier, and that far from the light source rises later. Thus, the color of resin mixed with the thermochromic pigment fades gradually over a period of the entire solidification process. The color variation in the regions with defects of bubbles, insufficient material filling, etc., is much different from that in the normal curing regions.
Originality/value
A temperature-sensitive organic chromatic chemical pigment is prepared to present the visual variation over a period of the entire curing process. A novel 3D printing scheme with visual surveillance is proposed to monitor the layer-wise curing quality and to timely stop the possible unqualified printing resulted from bubbles, insufficient material filling, etc.
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Zhenkun Liu, Ping Jiang, Jianzhou Wang, Zhiyuan Du, Xinsong Niu and Lifang Zhang
This study/paper aims to reach the core objective of hospitality order cancellation prediction (HOCP), that is, to identify potential cancellers from many customer bases, thereby…
Abstract
Purpose
This study/paper aims to reach the core objective of hospitality order cancellation prediction (HOCP), that is, to identify potential cancellers from many customer bases, thereby enhancing the effectiveness of customer retention campaigns. However, few studies have focused on predicting hospitality order cancellation.
Design/methodology/approach
A novel profit-driven model for predicting hospitality order cancellation is proposed to bridge this research gap. The authors construct profit-driven extreme gradient boosting (XGBoost) based on a grid search on HOCP to maximize profit by selecting optimal hyperparameters of XGBoost.
Findings
Real-world data set is analyzed, and the proposed model yields more profits than other predictive models. Sensitivity analysis proves that the proposed model is robust to the key hyperparameter and application scenario. Furthermore, some preventive measures based on visual analysis results are provided to reduce the cancelled probability of orders.
Research limitations/implications
This research will help hotel managers to transfer the modeling goal to profit orientation and encourage relevant researchers to interpret the prediction results of models for hotel order cancellation prediction in a post hoc manner. Besides, the proposed model can be applied to various enterprises with different average order profits and help managers optimize revenue management.
Originality/value
This research expands the relevant literature and offers guidance for predicting hospitality order cancellation from a profit-driven perspective at the customer level. The proposed model can provide macro-control to hotel managers and obtain the most satisfactory profits in micro-control.
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Shuochen Wei, Lifang Wang, Wenbo Jiang and Taiwen Feng
Based on upper echelons theory and social contagion theory, we investigate how environmental leadership affects GIC via green human resource management (GHRM) and examine the…
Abstract
Purpose
Based on upper echelons theory and social contagion theory, we investigate how environmental leadership affects GIC via green human resource management (GHRM) and examine the moderating role of environmental climate.
Design/methodology/approach
We conduct hierarchical regression and use the bootstrap method to analyze the two-waved data from 317 Chinese manufacturers in order to verify the hypotheses.
Findings
The results indicate that GHRM mediates the impacts of environmental leadership on green human capital, structural capital and relational capital. In addition, environmental climate strengthens the positive impact of environmental leadership on GHRM.
Originality/value
Our study enriches the literature on GIC by uncovering the “black box” between environmental leadership and GIC, providing a logical framework opposite to mainstream GIC research, and expanding the boundary condition for GIC accumulation. This study provides more logical paths for enterprises and governments to increase the accumulation of GIC and promote green intellectual economy development.
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Man Zhang, Liangping Xia, Suihu Dang, Lifang Shi, Axiu Cao and Chunlei Du
The pressure sensors can convert external pressure or mechanical deformation into electrical power and signal, which cannot only detect pressure or strain changes but also harvest…
Abstract
Purpose
The pressure sensors can convert external pressure or mechanical deformation into electrical power and signal, which cannot only detect pressure or strain changes but also harvest energy as a self-powered sensor. This study aims to develop a self-powered flexible pressure sensor based on regular nanopatterned polymer films.
Design/methodology/approach
In this paper, the self-powered flexible pressure sensor is mainly composed of two nanopatterned polymer films and one conductive electrode layer between them, which is a sandwich structure. The regular nanostructures increase the film roughness and contact area to enhance the friction effect. To enhance the performance of the pressure sensor, different nanostructures on soft polymer sensitive layers are fabricated using UV nanoimprint lithography to generate more triboelectric charges.
Findings
Finally, the self-powered flexible pressure sensor is prepared, which consists of sub-200 nm resolution regular nanostructures on the surface of the elastic layer and an indium tin oxide electrode thin film. By converting the friction mechanical energy into electrical power, a maximum power of 423.8 mW/m2 and the sensitivity of 0.8 V/kPa at a frequency of 5 Hz are obtained, which proves the excellent sensing performance of the sensor.
Originality/value
The acquired electrical power and pressure signal by the sensor would be processed in the signal process circuit, which is capable of immediately and sustainably driving the highly integrated self-powered sensor system. Results of the experiments show that this new pressure sensor is a potential method for personal pressure monitoring, featured as being wearable, cost-effective, non-invasive and user-friendly.
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Lifang Shu, Haiying Wei and Yaxuan Ran
The present research aims to construct the brand well-being concept and develop the brand well-being scale.
Abstract
Purpose
The present research aims to construct the brand well-being concept and develop the brand well-being scale.
Design/methodology/approach
By interviewing 21 consumers and coding interview text, the authors propose and construct the definition of brand well-being. Using two large sample surveys, the authors develop 11 items for the brand well-being scale.
Findings
By interviewing 21 consumers and coding interview text, the authors propose and construct the definition of brand well-being. Using two large sample surveys, the authors develop 11 items for the brand well-being scale.
Originality/value
This research combines the branding theory and positive psychology theory, expands the extant understanding of brand value and provides new insights into optimizing a brand strategy.
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Lifang Zhao, Jiman Lee and Sungok Moon
The purpose of this paper is to examine the relationship between employees’ corporate social responsibility (CSR) perception and their organizational identification in a Chinese…
Abstract
Purpose
The purpose of this paper is to examine the relationship between employees’ corporate social responsibility (CSR) perception and their organizational identification in a Chinese context. The moderating effect of employees’ collectivist orientation on the relationship between CSR perception and organizational identification is also examined.
Design/methodology/approach
Data were collected from 308 employees of 7 firms in Zhejiang Province, located in southeast China. Hierarchical regression analyses were utilized to test the hypotheses.
Findings
The results indicate that all three dimensions of CSR perception in this study, specifically, economic, philanthropic and strategic CSR perception, are strongly and positively related to the organizational identification of employees. Employees’ collectivist orientation positively influences the relationship between strategic CSR perception and organizational identification. In contrast, collectivist orientation negatively influences the relationship between economic CSR perception and organizational identification. However, no moderating effect of collectivism on the relationship between philanthropic CSR perception and organizational identification was found.
Research limitations/implications
The findings highlight the positive relationship between employees’ CSR perception and their workplace attitudes, shedding particular light on how employees’ personal values influence their responses to CSR in Chinese organizations.
Originality/value
This study extends the current understanding on the relationship between CSR and organizational identification. Particularly, the authors include multiple dimensions of CSR (economic, philanthropic and strategic CSR) in the research model, demonstrating that the link between CSR perception and organizational identification is influenced by employees’ collectivist orientation.
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The purpose of this paper is to find an incentive strategy to enhance the interests of the main manufacturer by inducing the suppliers to conflict the fixed incentive provided by…
Abstract
Purpose
The purpose of this paper is to find an incentive strategy to enhance the interests of the main manufacturer by inducing the suppliers to conflict the fixed incentive provided by the main manufacturer.
Design/methodology/approach
The main manufacturer‐supplier model is widely applied in the R&D procedure of complex products such as aeroplanes. Because of the uncertainty in the R&D, the effort of the suppliers has an important effect on it. Considering the dynamic interaction between the main manufacturers and suppliers, with the main manufacturers as leaders and suppliers as followers, this paper establishes a Grey‐Stackelberg model to analyze the best change of the incentive strategies of the main manufacturers and the effort strategies under incentive‐conflict of suppliers under the uncertain environment. A numeric example is also computed in the last part of the paper.
Findings
The results show that the main manufacturer can increase its benefit without damaging the interests of suppliers by controlling the fixed incentives.
Originality/value
The paper succeeds in establishing the Grey‐Stackelberg model by analysing the grey area among the main manufacturer and the suppliers, and helps to develop grey systems theory.
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Lifang Cui, Gillian Hubbard and Margaret Gleeson
The purpose of this paper is to survey and consider the implications of the literature justifying the value of teaching poetry. There has been a long tradition of literature…
Abstract
Purpose
The purpose of this paper is to survey and consider the implications of the literature justifying the value of teaching poetry. There has been a long tradition of literature education in the English departments of Chinese universities. English Poetry courses are offered within optional literature modules in senior stages of a BA in English language and literature. In 2000, the new national syllabus for tertiary English majors was issued. This syllabus has brought the teaching of English into line with the perceived practical needs of society. As a result, poetry courses have been under threat within the degree. A substantial number of university teachers have responded to this threat with articles arguing the value of teaching of poetry.
Design/methodology/approach
The China National Knowledge Infrastructure (CNKI), the largest database of academic journals in China, reveals that from 2000 to 2013, 102 articles about teaching English poetry to Chinese people learning English as a foreign language were published in Chinese academic journals, of which 67 are concerned with English majors. This literature examines these 67 articles.
Findings
These articles justify the purpose of teaching English poetry, evaluate the content of poetry courses and share pedagogical strategies. The issues within this discussion fall into three categories: why teach poetry; what to teach in poetry courses; and how to teach poetry. Because the commitment of Chinese teachers to sharing their beliefs about teaching English poetry is positioned in the context of increased advocacy for the creation of inter-disciplinary market-orientated graduates, discomfort, uncertainty and the desire for change emerge in this discussion. On the other hand, teachers looking for change express caution about the costs of changing pedagogical approaches on the development of the skills of close reading and analysis of poetical texts.
Originality/value
This investigation of the local Chinese context resonates with and contributes to the wider discussion of the challenges faced by English literature teachers in both second- (L2) and first-language (L1) contexts and warrants examination. It is difficult to say in advance how far such knowledge could contribute to any policy decisions that may be made in the future, but it is important that the voice of teachers contributes to the larger international debate about the value of humanities in tertiary-level education.
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