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The bridge expansion joint (BEJ) is a key device for accommodating spatial displacement at the beam end, and for providing vertical support for running trains passing over the gap between the main bridge and the approach bridge. For long-span railway bridges, it must also be coordinated with rail expansion joint (REJ), which is necessary to accommodate the expansion and contraction of, and reducing longitudinal stress in, the rails. The main aim of this study is to present analysis of recent developments in the research and application of BEJs in high-speed railway (HSR) long-span bridges in China, and to propose a performance-based integral design method for BEJs used with REJs, from both theoretical and engineering perspectives.

The study first presents a summary on the application and maintenance of BEJs in HSR long-span bridges in China representing an overview of their state of development. Results of a survey of typical BEJ faults were analyzed, and field testing was conducted on a railway cable-stayed bridge in order to obtain information on the major mechanical characteristics of its BEJ under train load. Based on the above, a performance-based integral design method for BEJs with maximum expansion range 1600 mm (±800 mm), was proposed, covering all stages from overall conceptual design to consideration of detailed structural design issues. The performance of the novel BEJ design thus derived was then verified via theoretical analysis under different scenarios, full-scale model testing, and field testing and commissioning.

Two major types of BEJs, deck-type and through-type, are used in HSR long-span bridges in China. Typical BEJ faults were found to mainly include skewness of steel sleepers at the bridge gap, abnormally large longitudinal frictional resistance, and flexural deformation of the scissor mechanisms. These faults influence BEJ functioning, and thus adversely affect track quality and train running performance at the beam end. Due to their simple and integral structure, deck-type BEJs with expansion range 1200 mm (± 600 mm) or less have been favored as a solution offering improved operational conditions, and have emerged as a standard design. However, when the expansion range exceeds the above-mentioned value, special design work becomes necessary. Therefore, based on engineering practice, a performance-based integral design method for BEJs used with REJs was proposed, taking into account four major categories of performance requirements, i.e., mechanical characteristics, train running quality, durability and insulation performance. Overall BEJ design must mainly consider component strength and the overall stiffness of BEJ; the latter factor in particular has a decisive influence on train running performance at the beam end. Detailed BEJ structural design must stress minimization of the frictional resistance of its sliding surface. The static and dynamic performance of the newly-designed BEJ with expansion range 1600 mm have been confirmed to be satisfactory, via numerical simulation, full-scale model testing, and field testing and commissioning.

This research provides a broad overview of the status of BEJs with large expansion range in HSR long-span bridges in China, along with novel insights into their design.

Intercultural communicative competence (ICC) is important when different cultural speakers learn Mandarin as a Foreign Language (MFL). The use of virtual reality (VR) has been shown to be effective for improving ICC. Hence, this study investigates a production-based instructional strategy where students use VR to view and create VR environments with cultural elements for learning MFL to determine if this strategy was effective with the current cohort of students (2023). In addition, it would be investigated whether there was a difference in ICC between the 2019 cohort and the 2023 cohort.

The study employed a quasi-experimental method to assess ICC using the Survey of student’s Intercultural Competence (SSIC) and gauged the improvement within the 2023 cohort. Next, the ICC between the 2023 and 2019 cohorts was compared to determine if there was a significant difference. Data was analysed using paired-samples t-tests and thematic analysis for the open-ended responses.

There was a significant improvement in ICC after the intervention for the 2023 cohort, which was supported with the open-ended response. However, the t-test results indicated no significant difference in ICC between the 2019 and 2023 cohorts. However, the 2023 cohort seemed to be more motivated, confident and eager to continue using VR. The findings indicate that VR when combined with an appropriate pedagogy could improve students ICC.

The use of VR and this production-based instructional strategy could be used in other languages and could possibly be used to improve linguistic and communication skills.

The integration of social media and e-commerce has resulted in a rising phenomenon among individual content providers (ICPs), who used to offer free content, to provide consumers with paid content, such as online courses, Q&As or consultations. Despite the prevalence of ICPs’ content monetization, empirical research has rarely studied its underlying mechanism. This paper examines how the characteristics of free content contributed by ICPs on social media platforms influence their paid content sales, focusing on the perspective of human brand.

The empirical setting is an online knowledge exchange platform, where users are allowed to provide free content (e.g. answers) on the social media platform and launch paid content (e.g. lectures) on the e-commerce platform. A machine learning technique is employed to construct measures for the characteristics of free content, and fixed-effects estimation is presented to confirm which factors have a significant influence on the sales of paid content.

The empirical results show that the quality, diversity and expertness of free content have a significant positive impact on the sales of the ICP-paid content, with the brand popularity of ICP playing a mediating role.

This study is the first attempt to demystify the relationship between content contribution and ICPs’ content monetization from the perspective of human brand. The findings validate the effectiveness of the “Selling by Contribution” strategy and provide valuable insights for ICPs and social media platforms.

This study aims to test the first and second-stage moderating effects of tourists’ past travel experiences on the relationships between national responses, destination trust and tourists’ willingness to pay in the post-pandemic recovery era.

The proposed model was tested with a sample of 398 tourists in Vietnam. The path analysis was applied to investigate the mediating and moderating effects.

The findings emphasise the mediating effect of destination trust in the relationships between national responses and tourists’ willingness to pay. With the moderating effect of past travel experience, all the first-stage indirect effects are significant, but the second-stage indirect effects are significant only at a high level of past travel experience.

This study provides theoretical implications for solving the puzzle about the paradox of trust in the government’s responses in the post-pandemic era. Practical implications for destination marketing organisations in the post-pandemic recovery era are then discussed.

High-speed turnouts are more complex in structure and thus may cause abnormal vibration of high-speed train car body, affecting driving safety and passenger riding experience. Therefore, it is necessary to analyze the data characteristics of continuous hunting of high-speed trains passing through turnouts and propose a diagnostic method for engineering applications.

First, Complete Ensemble Empirical Mode Decomposition with Adaptive Noise (CEEMDAN) is performed to determine the first characteristic component of the car body’s lateral acceleration. Then, the Short-Time Fourier Transform (STFT) is performed to calculate the marginal spectra. Finally, the presence of a continuous hunting problem is determined based on the results of the comparison calculations and diagnostic thresholds. To improve computational efficiency, permutation entropy (PE) is used as a fast indicator to identify turnouts with potential problems.

Under continuous hunting conditions, the PE is less than 0.90; the ratio of the maximum peak value of the signal component to the original signal peak value exceeded 0.7, and there is an energy band in the STFT time-frequency map, which corresponds to a frequency distribution range of 1–2 Hz.

The research results have revealed the lateral vibration characteristics of the high-speed train’s car body during continuous hunting when passing through turnouts. On this basis, an effective diagnostic method has been proposed. With a focus on practical engineering applications, a rapid screening index for identifying potential issues has been proposed, significantly enhancing the efficiency of diagnostic processes.

The present study aims to investigate factors influencing Gen-Z consumers' “green food purchase intention” and “healthy lifestyle”. Guided by the attribution theory, “perceived usefulness of green food”, “food safety concerns” (internal attributes), “perceived threat of environmental problems” and “green peer influence” (external attributes) are considered the predictors of “attitude towards green food”, which eventually lead to a healthy lifestyle and green food purchase intention. Besides, “fear of pandemic recurrence” and “greenwash” are tested as moderators.

The Structural Equation Modelling-Partial Least Squares (PLS-SEM) technique was employed for the model testing. An online questionnaire survey was conducted among Gen-Z Chinese adults, which yielded 556 complete, valid responses.

The findings indicate that “consumers' attitudes towards green food” are positively influenced by “perceived threat of environmental problems”, “perceived usefulness of green food”, “concerns about food safety”, and the influence of “green peers”. In addition, results revealed that “attitude toward green food” exerts a positive effect on “healthy lifestyle” and “green food purchase intention”. The study supports the moderating role of “perceived greenwash” in the relationship between “attitude” and “intention to purchase green food”. However, there was no evidence to support the moderating effect of “fear of pandemic recurrence” in relation to a “healthy lifestyle”.

This study is a pioneer in utilizing the attribution theory to predict the drivers of a “healthy lifestyle” and the “intention to purchase green foods”. Furthermore, this study predicted the moderating influence of “fear of pandemic recurrence” on the relationship between attitude and “healthy lifestyle”, a link that has not been tested in previous research. Furthermore, it introduces a novel examination of the moderating effect of “perceived greenwash” on the relationship between “attitudes” and “purchase intentions”.

Organizational citizenship behavior (OCB) was initially described as discretionary behavior not formally rewarded by the organization. However, empirical evidence has indicated that many non-task behaviors are compulsory and contribute to performance evaluation, leading to research on nondiscretionary OCB (e.g. compulsory citizenship, citizenship pressure). It is unclear whether these behaviors are best described as OCB, in-role behavior or a separate construct. The goal of the current study is to determine the conceptual and measurement overlap between OCB and nondiscretionary OCB.

In a quantitative survey design, we collected multiphasic data from 315 employees to provide evidence for the convergent/divergent validity of compulsory citizenship behavior within the OCB nomological network and separate from in-role behavior.

The results support a unique contribution of compulsory citizenship behavior to the operationalization of OCB by emphasizing the employees’ perceptions of whether they perform OCB autonomously.

This research shows a distinction that should be recognized in future research, as existing OCB theories may only apply to discretionary OCB, such that compelled citizenship is not OCB. This would explain why compulsory OCB incurs less benefits than other forms of externally-motivated (i.e. impression management) OCB.

This study aims to propose a research model that emphasizes the moderating influence of ethical leadership (ELS) and the link between socially responsible human resource management (SRHRM) and leaders’ eco-helping behavior (LEH) in the aviation industry.

The authors used a time-lag research design. Data were gathered from 397 respondents working for aviation companies in Vietnam and analyzed using SmartPLS 4.0.

The findings show that SRHRM has a beneficial effect on LEH through employees’ voluntary workplace green behavior (EVB). Based on social cognitive theory, this study developed a theoretical model of how SRHRM influences LEH through EVB. The authors discovered that SRHRM increased LEH and that EVB mediated this favorable relationship. Furthermore, the results demonstrate that ELS mitigates the indirect impact of SRHRM on LEH via EVB.

Future studies should assess constructs with numerous observations across time, with a larger sample size and in different industrial settings.

Volunteerism is one of the most important values in the aviation industry given that it is vulnerable to practices such as overbooking, delaying, postponing flights and pressure weather.

This study emphasized the impact of SRHRM and ELS on LEH while fulfilling their professional obligations. EVB may be best positioned to mediate the relationship between SRHRM and LEH.

Based on the Sociometer Theory, this study aims to develop a comprehensive framework explaining how and when negative workplace gossip triggers distinct responses, including employee silence and compulsory citizenship behavior (CCB).

Two scenario-based experiments and a field survey were conducted to examine hypotheses. Study 1 (N = 149) manipulated workplace negative gossip and assessed the mediating effects of state self-esteem. Study 2 (N = 217) manipulated workplace negative gossip and consideration of future consequences (CFC) to verify the stability of the mediating mechanism and test the moderating effect of CFC. Study 3 (N = 321) tested the whole research model.

The findings indicate that negative workplace gossip decreases state self-esteem, resulting in silence among employees with low levels of CFC, while inducing CCB through state self-esteem among employees with high levels of CFC.

This study not only extends the research of negative workplace gossip by exploring its multifaceted impact on employee responses but also highlights the role of personality traits in shaping individuals’ response strategies.

Based on the conservation of resources (COR) theory, this study explores the impact of tyrannical leadership on knowledge hiding through the mediating role of psychological distress. Furthermore, this study investigates the moderating role of psychological resilience in the tyrannical leadership, psychological distress and knowledge hiding relationships.

Quantitative data were collected from 364 employees working in the manufacturing and service sectors in Vietnam. Partial least squares structural equation modeling (PLS-SEM) was employed to test the proposed model.

The results show that tyrannical leadership and psychological distress enhance employees’ knowledge-hiding behaviors. Moreover, psychological distress mediates the nexus between tyrannical leadership and knowledge-hiding, while psychological resilience moderates these relationships.

The empirical findings of this investigation offer significant insights for managers to better undermine the negative effects of tyrannical leadership and enhance the psychological well-being of employees.

This study is probably the first attempt to explore how psychological distress mediates the impact of tyrannical leadership on knowledge hiding. This study also extends the current knowledge by considering the moderating role of psychological resilience in the relations between tyrannical leadership, psychological distress and knowledge hiding.