Yayun Qi, Huanyun Dai, Peng Ao, Xiaolu Cui and Wenhui Mao
Axleboxes are an important structure that connects the wheelset with the bogie frame. Inside axlebox bogies have lower wheelset yaw angle stiffness and better curve-passing…
Abstract
Purpose
Axleboxes are an important structure that connects the wheelset with the bogie frame. Inside axlebox bogies have lower wheelset yaw angle stiffness and better curve-passing performance. The purpose of this paper to study the differences in the wear evolution law and the influencing factors of the two types of metro vehicles.
Design/methodology/approach
This paper established the dynamic model and wear model of both outside axlebox and inside axlebox metro vehicles to research the wheel wear evolution law of the two types of vehicles. The curve passing performance of two vehicles is analyzed. The effect of key parameters on wheel wear is studied, including the lateral distance of the axlebox, the longitudinal stiffness of the rotary arm node, the lateral stiffness of the rotary arm node and the wheel profiles.
Findings
The results showed that the model of inside axlebox metro vehicles improved vehicle safety and curve-passing performance. At the same time, inside axlebox metro vehicles reduce wheel wear of the wheel tread area and wheel flange area. When the S1002 wheel tread profile matched with the vehicle parameters, the wheel wear is minimized.
Originality/value
This paper established a dynamic model for inside axleboxes metro vehicles, then used a wheel wear model to analyze the evolution of wheel wear and the key influencing factors of the inside axleboxes metro vehicles.
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-07-2024-0256/
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Wenhui Lin, Lina (Zixuan) Li, Leye (Leonard) Li and David Hay
This study aims to examine the determinants of disclosing repetitive year-to-year key audit matters (KAMs) content by auditors for a client and whether repetitive KAMs content is…
Abstract
Purpose
This study aims to examine the determinants of disclosing repetitive year-to-year key audit matters (KAMs) content by auditors for a client and whether repetitive KAMs content is indicative of lower audit effort.
Design/methodology/approach
The authors use a sample of publicly listed firms from New Zealand between 2016 and 2020. Multivariate regression models are used to test the determinants of the extent of repetitive content in the KAMs section of the audit report. The authors compare the KAMs disclosed in the current period to those disclosed in prior period(s) to determine the level of recurring items and repetitive textual content.
Findings
The authors find evidence of repetitive KAMs content being disclosed at the client level since the reporting requirement was introduced. In multivariate analyses, the authors find that client business risk and auditor reputation are negatively associated with auditors’ reporting of repetitive KAMs. Furthermore, the authors find that auditors exert lower effort on audits for which they report a higher level of repetitive content in KAMs.
Originality/value
The study provides novel findings that contribute to the literature on auditors’ voluntary reporting of KAMs and provide important practical implications for investors and regulators.
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Ehsan Tashakori and Yaser Sobhanifard
This study aims to comprehensively analyze the intersection of technology management and innovation management amidst the fourth industrial revolution, uncovering evolving trends…
Abstract
Purpose
This study aims to comprehensively analyze the intersection of technology management and innovation management amidst the fourth industrial revolution, uncovering evolving trends and influential contributors.
Design/methodology/approach
Using the Bibliometrix R-package, this pioneering research conducts a bibliometric analysis to delve into innovation and technology management literature, quantifying scholarly output and identifying thematic breakthroughs.
Findings
The study reveals quantitative insights into the progression of innovation and technology management research, offering guidance on evolving trends, thematic breakthroughs and influential contributors.
Practical implications
The findings offer valuable insights for practitioners and managers, guiding them through emerging trends and recommending a dual focus on fundamental principles and emerging areas for strategic decision-making.
Social implications
By fostering active engagement with evolving trends, this research contributes to the ongoing technology and innovation management discourse, potentially leading to societal benefits and advancements.
Originality/value
This study pioneers an in-depth bibliometric analysis at the intersection of innovation and technology management, offering unique insights and quantitative assessments of scholarly output and thematic trends, thus adding significant value to the existing literature.