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1 – 10 of 18Peng Yin, Yongjun Hou and Xianjin Wu
The purpose of this paper is to obtain the combination of working parameters suitable for pulsating negative pressure shale shaker through simulation, which is conducive to…
Abstract
Purpose
The purpose of this paper is to obtain the combination of working parameters suitable for pulsating negative pressure shale shaker through simulation, which is conducive to efficient recovery of clean drilling fluid and relatively dry cuttings.
Design/methodology/approach
Shale shaker is still one of the main equipment in solid–solid and solid–liquid separation processes in drilling industry. This research is based on a new drilling fluids circulation treatment device, namely pulsating negative pressure shale shaker. In this work, a numerical study of particle flow and separation in the pulsating negative pressure shale shaker is carried out by coupling computational fluid dynamics/discrete element method (CFD-DEM). The effect of vibration parameters and negative pressure parameters are studied in terms of conveyance velocity and percent through screen.
Findings
The results show that, conveyance velocity of particle is mainly affected by vibration parameters, negative pressure in pulsating form can effectively prevent cuttings from sticking to the screen. Vibration parameters and pulsating airflow velocity peak have great influence on percent through screen, while vibration frequency and screen slope have influence on the time when the percent through screen reaches stability.
Originality/value
In this paper, the authors put forward a new kind of drilling waste fluid treatment equipment, and focused on the study of particle movement law. The results have important guiding significance for the selection of structural design parameters and rational use of equipment. In addition, the new device provides a new idea for solid–liquid separation method, which is one of the hot topics in current research.
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Fenfang Cao, Jinchao Zhang, Xianjin Zha, Kunfeng Liu and Haijuan Yang
Digital libraries and academic search engines have developed as two important online scholarly information sources with different features. The purpose of this study is to compare…
Abstract
Purpose
Digital libraries and academic search engines have developed as two important online scholarly information sources with different features. The purpose of this study is to compare digital libraries and academic search engines from the perspective of the dual-route model.
Design/methodology/approach
Research hypotheses were developed. Potential participants were recruited to answer an online survey distributing at Chinese social media out of which 251 responses were deemed to be valid and used for data analysis. The paired samples t-test was used to compare the means.
Findings
Both information quality (central route) and source credibility (peripheral route) of digital libraries are significantly higher than those of academic search engines, while there is no significant difference between digital libraries and academic search engines in terms of affinity (peripheral route).
Practical implications
In the digital information society, the important status of digital libraries as conventional information sources should be spread by necessary measures. Academic search engines can act as complementary online information sources for seeking academic information rather than the substitute for digital libraries. Practitioners of digital libraries should value the complementary role of academic search engines and encourage users to use academic search engines while emphasizing the importance of digital libraries as conventional information sources.
Originality/value
According to the dual-route model, this study compares digital libraries and academic search engines in terms of information quality, source credibility and affinity, which the authors believe presents a new lens for digital libraries research and practice alike.
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Xianjin Zha, Zeyu Lu and Yalan Yan
For undergraduate and graduate students in universities, social media are playing an important role in their study/research because a large amount of academic information has been…
Abstract
Purpose
For undergraduate and graduate students in universities, social media are playing an important role in their study/research because a large amount of academic information has been accumulated on social media. Indeed, social media are complementing university libraries. Given that intelligent recommender systems have been widely implemented on social media, this paper aims to examine the adoption mechanism of intelligently recommended information by university students in their study/research.
Design/methodology/approach
Building upon the updated information system success model and herding theory, this study developed a research model to examine the determinants of recommended information adoption in mobile applications for social media. Data were collected through an online questionnaire and analyzed with partial least squares structural equation modelling.
Findings
The results suggest that herding belief is a valid second-order construct, comprising two first-order dimensions of imitating others and discounting their own information. Information quality, system quality and service quality directly impact satisfaction with the intelligent recommender system. Furthermore, satisfaction with the intelligent recommender system and herding belief directly impact recommended information adoption by university students in their study/research.
Originality/value
This study draws on the updated information system success model and incorporates herding belief as an extended component to investigate recommended information adoption, providing a new lens for understanding recommended information adoption by university students in their study/research.
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Yalan Yan, Siyu Xin and Xianjin Zha
Knowledge transfer which refers to the communication of knowledge from a source so that it is learned and applied by a recipient has long been a challenge for knowledge…
Abstract
Purpose
Knowledge transfer which refers to the communication of knowledge from a source so that it is learned and applied by a recipient has long been a challenge for knowledge management. The purpose of this study is to understand influencing factors of transactive memory system (TMS) and knowledge transfer.
Design/methodology/approach
Drawing on the theories of communication visibility, social distance and flow, this study develops a research model. Then, data are collected from users of the social media mobile App. Partial least squares-structural equation modeling (PLS-SEM) is employed to analyze data.
Findings
TMS is a valid second-order construct in the social media mobile app context, which is more reflected by credibility. Meanwhile, communication visibility and social distance each have positive effects on TMS which further has a positive effect on knowledge transfer. Flow has a positive effect on knowledge transfer.
Practical implications
Developers of the mobile App should carefully consider the role of information and communication technology (ICT) in supporting TMS and knowledge transfer. They should consider recommendation algorithm so that the benefit of communication visibility can be retained. They should design the feature to classify users based on similarity so as to stimulate users' feeling of close social distance. They should keep on improving features based on users' holistic experience.
Originality/value
This study incorporates the perspectives of communication visibility, social distance and flow to understand TMS and knowledge transfer, presenting a new lens for research.
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Yalan Yan, Xi Zhang, Xianjin Zha, Tingting Jiang, Ling Qin and Zhiyuan Li
Digital libraries and social media are two sources of online information with different characteristics. The purpose of this paper is to integrate self-efficacy into the analysis…
Abstract
Purpose
Digital libraries and social media are two sources of online information with different characteristics. The purpose of this paper is to integrate self-efficacy into the analysis of the relationship between information sources and decision making, and to explore the effect of self-efficacy on decision making, as well as the interacting effect of self-efficacy and information sources on decision making.
Design/methodology/approach
Survey data were collected and the partial least squares structural equation modeling was employed to verify the research model.
Findings
The effect of digital library usage for acquiring information on perceived decision quality (PDQ) is larger than that of social media usage for acquiring information on PDQ. Self-efficacy in acquiring information (SEAI) stands out as the key determinant for PDQ. The effect of social media usage for acquiring information on PDQ is positively moderated by SEAI.
Practical implications
Decision making is a fundamental activity for individuals, but human decision making is often subject to biases. The findings of this study provide useful insights into decision quality improvement, highlighting the importance of SEAI in the face of information overload.
Originality/value
This study integrates self-efficacy into the analysis of the relationship between information sources and decision making, presenting a new perspective for decision-making research and practice alike.
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Hongyan Jiang, Xianjin Jiang, Peizhen Sun and Xiuping Li
The purpose of this paper is to explicate the relationship between workplace ostracism and deviant behavior, and further test the mediating role of emotional exhaustion and the…
Abstract
Purpose
The purpose of this paper is to explicate the relationship between workplace ostracism and deviant behavior, and further test the mediating role of emotional exhaustion and the moderating role of resilience.
Design/methodology/approach
A sample of 409 first-line production workers from four manufacturing enterprises in China was collected. A moderated mediation analysis was employed to test the hypotheses and examine the relationships proposed in the research framework.
Findings
The findings indicate that emotional exhaustion could mediate the relationship between workplace ostracism and deviant behavior. Moreover, the results from the moderated mediation analysis suggest that the mediation of emotional exhaustion is moderated by resilience such that with a higher level of resilience, the mediation effect of emotional exhaustion becomes weaker.
Research limitations/implications
The participants of this study are limited to manufacturing enterprises, and thus our findings may not be equally valid for other types of industries. Meanwhile, this study is a cross-sectional research that could not explain the causal relationship between workplace ostracism and deviant behavior.
Practical implications
The present research can offer some managerial implications about how to avoid the occurrence of workplace ostracism and deviant behavior for organizations.
Originality/value
This study constructs a moderated mediation model by introducing the potential mediating role of emotional exhaustion and the moderating effect of resilience in order to reveal the mechanism through which workplace ostracism relates to deviant behavior. Our research not only integrates and enriches the ideas of the Stress-Non-Equilibrium-Compensation Approach and the Transactional Model of Stress and Coping Theory but could also inform future management practices for mitigating the negative consequences of workplace ostracism.
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Xianjin Zha, Chengsong Huang, Yalan Yan, Guanxiang Yan, Xue Wang and Kun Zhang
This study aims to explore the mechanisms of extended information seeking, which is the combination of extended information technologies (IT) use behavior and information-seeking…
Abstract
Purpose
This study aims to explore the mechanisms of extended information seeking, which is the combination of extended information technologies (IT) use behavior and information-seeking behavior. The purpose is to identify the factors that shape extended information seeking from the perspectives of psychological empowerment and attachment.
Design/methodology/approach
A research model was developed based on prior theory and literature. Survey data were collected, and the partial least squares (PLS) structural equation modeling was used to verify the research model.
Findings
Psychological empowerment is a well-constructed second-order construct, having a larger positive effect on extended information seeking. Digital libraries attachment has a positive effect on extended information seeking.
Practical implications
Accessing digital libraries does not mean using digital libraries effectively. Managers of digital libraries should design various specific information activities to help users enhance psychological empowerment. They should provide more available and responsive services for users to enhance digital libraries attachment.
Originality/value
Drawing on the adaptive structuration theory, this study examines extended information seeking by combining extended use of digital libraries and information seeking, presenting a new lens for digital library and information seeking research.
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Xianjin Zha, Jing Li and Yalan Yan
The purpose of this study is to examine and compare Chinese electronic resources and English electronic resources in terms of ease of use, usefulness and usage in the context of a…
Abstract
Purpose
The purpose of this study is to examine and compare Chinese electronic resources and English electronic resources in terms of ease of use, usefulness and usage in the context of a Chinese university library, so as to facilitate the effective use of English electronic resources in China.
Design/methodology/approach
Data collection was conducted through a large scale survey. A total of 378 valid data coming from the users of a Chinese university library were used for data analysis.
Findings
There are more users in Chinese university library who perceived that Chinese electronic resources are both easy to use and useful while English electronic resources are neither easy to use nor useful. Meanwhile, there are more users who used Chinese electronic resources more frequently while used English electronic resources less frequently.
Practical implications
This study could advance our knowledge about the current status of the use of Chinese electronic resources and English electronic resources as well as the digital divide at the second‐level and the third‐level, facilitating the effective use of English electronic resources.
Originality/value
Building on three levels of the digital divide, this study examines and compares Chinese electronic resources and English electronic resources in terms of ease of use, usefulness and usage in the context of Chinese university library, providing a new view for library electronic resources management research and practice alike.
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Yun Bai, Baozhuang Sun, Wenzhu Huangfu, Xianjin Sun, Zhiyong Liu, Cuiwei Du and Xiaogang Li
The purpose of this paper was to study the relationship between safe storage life and storage mode of hot-rolled sheet (Q235, X70) in humid environment, and a prediction model of…
Abstract
Purpose
The purpose of this paper was to study the relationship between safe storage life and storage mode of hot-rolled sheet (Q235, X70) in humid environment, and a prediction model of safe storage life under different storage modes was established.
Design/methodology/approach
The corrosion behavior of hot-rolled sheets under different storage conditions was studied with immersion experiment and morphology observation.
Findings
The results show that pitting occurs on the hot-rolled sheets in humid environment, and the corrosion behavior is strongly related with the storage mode. When they are stored separately, the number and depth of pits first increase and then decrease as the Cl− concentration rises, while for the stack storage, pit depth increases with increasing Cl− concentration. The safe storage time of separate storage is longer than that of stack storage. Based on this, a model of chloride ion concentration and storage life was established.
Originality/value
A storage safe life model of hot-rolled sheet in humid environment is proposed.
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Xianjin Zha, Li Li, Yalan Yan, Qian Wang and Gang Wang
The elaboration likelihood model (ELM) provides a general framework for understanding the basic processes underlying the effectiveness of persuasion. The purpose of this paper is…
Abstract
Purpose
The elaboration likelihood model (ELM) provides a general framework for understanding the basic processes underlying the effectiveness of persuasion. The purpose of this paper is to utilize the ELM to understand the basic processes underlying the effectiveness of persuasion to use digital libraries for getting information.
Design/methodology/approach
The survey data collection was conducted in one comprehensive university. The partial least squares structured equation modelling was employed to verify the research model.
Findings
Source credibility and reputation have positive effects on information usefulness which further significantly impacts digital library usage for getting information. The effect of information quality on information usefulness is overpowered by reputation. Information need positively moderates the effect of information quality on information usefulness and negatively moderates the effect of reputation on information usefulness.
Practical implications
Digital libraries enormously influence the way how individuals gather information over the world. However, the important status of digital libraries as conventional information sources in practice invites appreciation by more and more people. The authors believe the findings of this study provide useful insights for facilitating digital libraries to be fully accessed and utilized.
Originality/value
This study explores the effects of the central route (information quality) and the peripheral route (source credibility and reputation) on digital library usage for getting information by extending the ELM with information need as a motivation variable, presenting a new lens for digital library research and practice alike.
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