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1 – 3 of 3Wei Wang, Yongyong Zhao, Yenchun Jim Wu and Mark Goh
Although MOOCs have become a pervasive online learning model, the problem of high dropout rates still persists. Gathering the reasons for the high dropout rate can help to improve…
Abstract
Purpose
Although MOOCs have become a pervasive online learning model, the problem of high dropout rates still persists. Gathering the reasons for the high dropout rate can help to improve the platform design and management of the MOOCs.
Design/methodology/approach
A total of 74 studies was extracted from the Web of Science and Scopus. Following the PRISMA (Preferred Reporting Items for systematic Reviews and Meta-Analyses) guidelines, the open-source program CiteSpace is employed to review and induce the studies on the antecedents of MOOC dropout.
Findings
The antecedents of the MOOC dropout rate are the psychological, social, personal, course-related, and time factors, and the unexpected hidden cost. Motivation and interaction, which have a decisive impact on the dropout rate of MOOCs, interact with each other. Interaction helps to strengthen the motivation, and appropriate course design enhances the degree of interaction.
Originality/value
From the perspective of a learner, the more knowledge and skills the learners acquire, the more likely they will complete the course. Possessing adequate foundational knowledge is one way to arrest the dropout rate. On the part of the MOOC platform, better course design eases the dropout rate. Further, the course duration and hidden cost in MOOCs contribute to the dropout rate.
Details
Keywords
Yongyong Yang, Wendian Shi, Beina Zhang, Youming Song and Dezhen Xu
The purpose of this paper is to explore the structure, implicit attitude and consequences of followers' implicit followership theories in the Chinese cultural context through…
Abstract
Purpose
The purpose of this paper is to explore the structure, implicit attitude and consequences of followers' implicit followership theories in the Chinese cultural context through three studies. Study 1 explores the structure of followers' implicit followership theories. Study 2 examines the implicit attitude of followers towards followers' implicit followership theories. Study 3 verifies the impact of followers' implicit followership theories on the quality of collegial relationships.
Design/methodology/approach
The data for study 1 (n = 321) and study 3 (n = 243) were collected through an online self-report questionnaire, and the data for study 2 (n = 30) were collected through the go/no-go association task.
Findings
The structure of followers' implicit followership theories includes two dimensions: positive followership prototypes and negative followership prototypes. Followers' implicit attitudes were more likely to match positive followership prototypes than negative followership prototypes. Positive followership prototypes had a significantly positive impact on the quality of collegial relationships, whereas negative followership prototypes had a significantly negative impact on the quality of collegial relationships.
Research limitations/implications
The psychology and behaviour of employees can be better understood by exploring followers' implicit followership theories.
Practical implications
Employees hold a relatively positive implicit attitude towards followers. Therefore, managers should provide positive feedback to improve employees' positive self-cognition so that employees can better serve the organization and better promote its development.
Originality/value
The paper is one of the few studies to explore followers' implicit followership theories in the Chinese cultural context.
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Wei Wang, Yongyong He, Yang Li, Bin Wei, Yutong Hu and Jianbin Luo
The purpose of this study is to investigate the inner flow field characteristics of groove textures in thrust bearings. Cavitation and vortex are studied simultaneously to enrich…
Abstract
Purpose
The purpose of this study is to investigate the inner flow field characteristics of groove textures in thrust bearings. Cavitation and vortex are studied simultaneously to enrich the theories of surface texture.
Design/methodology/approach
Navier–Stokes equations are solved using computational fluid dynamics. The MIXTURE model is adopted to study the gas–liquid mixture flow under the cavitation condition.
Findings
Re number, the depth ratio as well as the area ratio of the groove texture and the bottom shape are all influencing factors of the inner flow field characteristics. When cavitation region and vortex region occupy the bottom of the groove texture, these do not overlap because of the pressure gradient. The positive pressure gradient in the non-cavitation region introduces nonlinearity into the velocity profiles, which affects the load-carrying capacity and friction.
Originality/value
Cavitation and vortex are studied simultaneously only in this study. The characteristics of the textured thrust bearing can be analyzed and explained with the combined effect of cavitation and vortex.
Details