Search results

1 – 10 of 31
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 16 June 2021

Yanlin Ren, Zhaomiao Liu, Yan Pang, Xiang Wang and Shanshan Gao

This paper aims to investigate the influence of droplet infiltration and sliding on the deposition size and make a uniform deposition by controlling the interaction between…

271

Abstract

Purpose

This paper aims to investigate the influence of droplet infiltration and sliding on the deposition size and make a uniform deposition by controlling the interaction between droplets, using the three-dimensional lattice Boltzmann method (LBM) based on the actual working condition.

Design/methodology/approach

D3Q19 Shan-Chen LB approach is developed and optimized based on the metal droplet deposition. The Carnahan-Starling equation of state and transition layers are introduced to maintain the greater stability and low pseudo velocities. In addition, an additional collision term is adopted to implement immersed moving boundary scheme to deal with no-slip boundaries on the front of the phase change.

Findings

The numerical results show that the new¬ incoming droplet wet and slide off the solidified surface and the rejection between droplets are the reasons for the deviation of the actual deposition length. The total length of the longitudinal section negatively correlates with the deposition distance. To improve the dimensional accuracy, the deposition distance and repulsion rate need to be guaranteed. The optimal deposition distance is found to have a negative linear correlation with wettability.

Originality/value

The numerical model developed in this paper will help predict the continuous metal droplet deposition and provide guidance for the selection of deposition distance.

Details

Rapid Prototyping Journal, vol. 27 no. 5
Type: Research Article
ISSN: 1355-2546

Keywords

Access Restricted. View access options
Article
Publication date: 15 May 2019

Jingyi Yan, Jin-Xiu Zhu, Nan Lu, Shanshan Gao, Jianfeng Ye, Chengzhi Yu, Minghui Yue and Xuerui Tan

The purpose of this paper is to investigate the superior relationship between blood lipid- and cardiovascular disease (CVD)-related hematological parameters using superior grey…

93

Abstract

Purpose

The purpose of this paper is to investigate the superior relationship between blood lipid- and cardiovascular disease (CVD)-related hematological parameters using superior grey relational analysis (GRA).

Design/methodology/approach

A total of 294 individuals who underwent simultaneous routine blood examination and blood lipid examination in the Physical Examination Center of the First Affiliated Hospital of Shantou University Medical College were included in this study. Superior GRA was performed to find out the superior factor in CVD-related hematological parameters and blood lipids. CVD-related hematological parameters included red blood cell distribution width, white cell count, and platelet count, platelet distribution width, mean platelet volume, as well as platelet crit. The indicators of blood lipids analyzed here consist of low-density lipoprotein, high-density lipoprotein, triglyceride and total cholesterol.

Findings

The results showed that all the grey relational degree of hematological parameters and blood lipids were over 0.8; the superior factor in hematological parameters was PLT, whereas TC was the superior factor in blood lipids.

Practical implications

Findings of this study suggested that hematological parameters are closely related to blood lipids and a potential role for hematological parameters in the prediction of dyslipidemia, which need further study; TC has the greatest influence on hematological parameters, whereas TG displays a minimal impact.

Originality/value

To the authors’ best knowledge, it was the first study to analyze the relationship between various CVD-related hematological parameters and blood lipids via superior GRA.

Details

Grey Systems: Theory and Application, vol. 9 no. 2
Type: Research Article
ISSN: 2043-9377

Keywords

Access Restricted. View access options
Article
Publication date: 30 August 2022

Shanshan Qian, Vivien K.G. Lim and Yongduan Gao

This study examines why and when qualitative job insecurity (JI) leads to instigated workplace incivility.

723

Abstract

Purpose

This study examines why and when qualitative job insecurity (JI) leads to instigated workplace incivility.

Design/methodology/approach

The authors collected data from 227 Chinese full-time employees from multiple organizations at two time points. Structural equation modeling was used to test hypotheses.

Findings

Results show that qualitative JI is positively related to instigated workplace incivility through negative emotions; this indirect relationship is weaker among employees with higher self-compassion and stronger among employees with higher rumination.

Originality/value

The authors shift the predominant focus on the predictor of instigated workplace incivility from quantitative JI to qualitative JI. Based on the transactional model of stress and the stressor–emotion model of counterproductive work behavior (CWB), they provide new theoretical insights on why qualitative JI affects workplace incivility and identify new boundary conditions that affect employees' reactions to qualitative JI.

Details

Career Development International, vol. 27 no. 5
Type: Research Article
ISSN: 1362-0436

Keywords

Access Restricted. View access options
Article
Publication date: 28 November 2018

Ning Zhang, Ruru Pan, Lei Wang, Shanshan Wang, Jun Xiang and Weidong Gao

The purpose of this paper is to propose a novel method using support vector machine (SVM) classifiers for objective seam pucker evaluation. Features are extracted using wavelet…

191

Abstract

Purpose

The purpose of this paper is to propose a novel method using support vector machine (SVM) classifiers for objective seam pucker evaluation. Features are extracted using wavelet analysis and gray-level co-occurrence matrix (GLCM), and the samples are evaluated using SVM classifiers. The study aims to solve the problem of inappropriate parameters and large required samples in objective seam pucker evaluation.

Design/methodology/approach

Initially, seam pucker image was captured, and Edge detection and Hough transform were utilized to normalize the seam position and orientation. After cropping the image, the intensity was adjusted to the same identical level through histogram specification. Then, the standard deviations of the horizontal image and diagonal image, reconstructed using wavelet decomposition and reconstruction, were calculated based on parameter optimization. Meanwhile, GLCM was extracted from the restructured horizontal detail image, then the contrast and correlation of GLCM were calculated. Finally, these four features were imported to SVM classifiers based on genetic algorithm for evaluation.

Findings

The four extracted features reflected linear relationships among five grades. The experimental results showed that the classification accuracy was 96 percent, which catches up to the performance of human vision, and resolves ambiguity and subjective of the manual evaluation.

Originality/value

There are large required samples in current research. This paper provides a novel method using finite samples, and the parameters of the methods were discussed for parameter optimization. The evaluation results can provide references for analyzing the reason of wrinkles during garment manufacturing.

Details

International Journal of Clothing Science and Technology, vol. 31 no. 1
Type: Research Article
ISSN: 0955-6222

Keywords

Access Restricted. View access options
Article
Publication date: 9 January 2025

Shanshan Yue, Norkhairul Hafiz B. Bajuri, Saleh F.A. Khatib and Mohammed Naif Alshareef

This study aims to explore the relationship between managerial ownership and environmental innovation, particularly focusing on the impact of minority shareholder protection…

21

Abstract

Purpose

This study aims to explore the relationship between managerial ownership and environmental innovation, particularly focusing on the impact of minority shareholder protection within the context of China’s A-share listed companies.

Design/methodology/approach

The study employs a fixed effect model over a decade-long sample, analysing secondary data from nonfinancial Chinese A-share firms. The two-stage least squares (2SLS) method is adopted to address endogeneity concerns.

Findings

The results demonstrate a significant positive influence of managerial ownership on environmental innovation, suggesting that top managers who have a say in the boardroom are inclined towards sustainable development. The presence of minority shareholders' protection positively moderates this relationship, underlining their roles in fostering environmentally friendly development. The subsample analysis showed that these relationships vary between state-owned enterprises (SOEs) and non-SOEs. It also differs between heavily and lightly polluting industries, which indicates that it is not enough to just have internal self-management, and more external pressure is necessary in heavily polluting industries.

Research limitations/implications

Our study underscores the importance for managers to recognize the potential of aligning their ownership interests with environmental objectives. Companies can enhance their commitment to sustainability by fostering an internal environment that supports minority shareholder rights.

Originality/value

This study specifically focuses on the role of top managers and minority shareholders, providing new empirical evidence on how their influence can drive sustainable development initiatives. It is also among the few studies that differentiate between firm characteristics and pollution intensity, which provides valuable insights into how the impact of managerial ownership and minority shareholder protection varies across different contexts.

Details

China Finance Review International, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2044-1398

Keywords

Access Restricted. View access options
Article
Publication date: 10 August 2021

Shixiong Chen, Qiyong Zhang, Bao Fu, Zhifan Liu and Shanshan Li

The purpose of this paper is to provide a solution for Reynolds equation with both throttling term and reverse throttling term and provides a reference for changing damping of…

191

Abstract

Purpose

The purpose of this paper is to provide a solution for Reynolds equation with both throttling term and reverse throttling term and provides a reference for changing damping of hydrostatic bearing.

Design/methodology/approach

The reverse throttling term is introduced into the Reynolds equation, and the adaptive damping factor is used in the Newton iteration method to improve convergence of numerical calculations. The static and dynamic performances of this bearing are numerically investigated by the finite-element method.

Findings

The results indicate that the reflux orifices lead to a decrease in load capacity at a high eccentricity ratio. Additionally, the mass inflow rate is increased; however, the additional inflow increase can be controlled by enhanced backpressure of the reflux orifice. Nevertheless, the bearing with the reflux orifice shows superiority in resisting high-frequency disturbances and enhances direct damping by 20% under a high backpressure.

Originality/value

This work presents an adaptive Newton damping iterative method for solving Reynolds equation with both throttling term and reverse throttling term. This work also provides a new idea for bearing structure design in improving damping.

Details

Industrial Lubrication and Tribology, vol. 73 no. 6
Type: Research Article
ISSN: 0036-8792

Keywords

Access Restricted. View access options
Article
Publication date: 12 February 2025

Xia Liu, Yuli Wang, Shanshan Li, Lei Chen, Fanbo Li and Hongfeng Zhang

The objective of this study is to utilize empirical research and analysis to examine the coupling coordination relationship between new quality productivity and higher vocational…

2

Abstract

Purpose

The objective of this study is to utilize empirical research and analysis to examine the coupling coordination relationship between new quality productivity and higher vocational education sustainable development.

Design/methodology/approach

To this end, an evaluation index system for the new quality productivity and higher vocational education sustainable development was constructed. The panel data of 30 Chinese provinces from 2016 to 2022 were then analyzed using the entropy method, the coupling coordination degree model, the Tobit regression model and Dagum’s Gini coefficient.

Findings

The findings indicate that the coupling coordination degree of new quality productivity and higher vocational education sustainable development exhibited an upward trend, though significant regional disparities were observed, with the highest coupling coordination degree recorded in the eastern region and the lowest in the northeastern region.

Originality/value

The study’s findings further suggest that the three factors of technological innovation level, rationalization of industrial structure and advanced industrial structure have a significant positive influence on the coupling coordination degree, while the level of government intervention has a significant negative influence on the Coupling Coordination Degree. The study posits that augmenting policy support, optimizing the government’s role, reinforcing the drive for technological innovation, and enhancing regional cooperation and exchange are imperative to foster high-quality development of the integration of industry and education between new quality productivity and higher vocational education.

Details

Asian Education and Development Studies, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2046-3162

Keywords

Access Restricted. View access options
Article
Publication date: 10 September 2024

Shanshan Shang and Sen Geng

Drawing on dual process theory as the overarching framework, this study investigates how different types of incidental vocabulary learning yield different performance, repetition…

51

Abstract

Purpose

Drawing on dual process theory as the overarching framework, this study investigates how different types of incidental vocabulary learning yield different performance, repetition, and continuance intention outcomes and uncovers the underlying mechanism.

Design/methodology/approach

We identify four popular types of incidental learning: traditional, a murder mystery game, noneducational live streaming, and VTuber. We propose that the underlying mechanism is the mediating role of perceived novelty as heuristic processing, and effort and performance expectancy as systematic processing. We conduct a between-subject experiment with four groups for the four types of incidental learning. From a total of 220 subjects, 55 valid responses were collected from each group. Analysis of variance and a partial least squares structural equation model are employed to examine the differences and mechanism.

Findings

The results show that noneducational live streaming performs significantly best for all three outcomes. The mechanism test demonstrates that perceived novelty and performance expectancy play significantly positive mediating roles, whereas effort expectancy has a null mediating effect.

Originality/value

The research provides both theoretical and practical implications.

Details

Library Hi Tech, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0737-8831

Keywords

Access Restricted. View access options
Article
Publication date: 29 June 2022

Shanshan Zhang, Zhiqiang Wang, Xiande Zhao and Jinyu Yang

Drawing upon relative absorptive capacity (AC) perspective, this study proposes a research model connecting R&D investment, three types of supply chain AC—AC from suppliers…

687

Abstract

Purpose

Drawing upon relative absorptive capacity (AC) perspective, this study proposes a research model connecting R&D investment, three types of supply chain AC—AC from suppliers, customers and university and research institutes (U&RIs)—and firm innovativeness and investigates the contingent effects of dysfunctional competition on the link between R&D investment and supply chain AC.

Design/methodology/approach

The authors used data collected from 262 manufacturers in three areas of China to empirically examine the conceptual model. The corresponding hypotheses were tested with structural equation modeling and regression analysis.

Findings

The empirical results demonstrate that AC from customers and AC from U&RIs play significant mediating roles in the relationship between R&D investment and firm innovativeness. Moreover, R&D investment has a significantly greater effect on AC from U&RIs under high levels of dysfunctional competition.

Originality/value

First, by conceptualizing AC from a relative view, this study discloses the unique roles of knowledge from different supply chain partners in realizing the benefits of R&D investment in innovation. Second, the exploration of the contingent roles of dysfunctional competition in the emerging economy of China enriches insights on the roles of institutional environment on knowledge absorption and the knowledge on relative AC in emerging economies.

Details

International Journal of Operations & Production Management, vol. 42 no. 10
Type: Research Article
ISSN: 0144-3577

Keywords

Access Restricted. View access options
Article
Publication date: 23 November 2021

Mingfei Li, Shanshan Huang, Aimin Deng, Billy Bai and Shoujiang Zhou

Drawing on self-determination theory and insights from the literature on service-dominant (S-D) logic and value co-creation, this paper aims to investigate the impacts of an S-D…

1083

Abstract

Purpose

Drawing on self-determination theory and insights from the literature on service-dominant (S-D) logic and value co-creation, this paper aims to investigate the impacts of an S-D orientation on positive customer outcomes (i.e. customer participation behaviors, customer citizenship behaviors and quality of life) and the underlying mechanisms of these effects.

Design/methodology/approach

Custom travel service (CTS) was chosen as the research setting. In total, 303 valid questionnaires were gathered from tourists in China. The partial least squares structural equation modeling approach was used for model estimation.

Findings

Tourism firms’ S-D orientation positively influences customer participation behaviors via customer psychological need satisfaction (i.e. perceived autonomy, competence and relatedness), customer citizenship behaviors via perceived relatedness and customer quality of life via perceived autonomy and perceived competence.

Research limitations/implications

Although the impact of S-D orientation is studied in the CTS context, this study illustrates how firms embracing S-D logic can facilitate value co-creation and customer quality of life, presenting a more precise picture for academics and practitioners.

Originality/value

This paper is the first attempt to empirically examine the relationships among S-D orientation, customer value cocreation and quality of life. The relevance of customer psychological need satisfaction is acknowledged in this study.

Details

International Journal of Contemporary Hospitality Management, vol. 34 no. 1
Type: Research Article
ISSN: 0959-6119

Keywords

1 – 10 of 31
Per page
102050