Search results
1 – 10 of over 2000Jing Yu, Jiawei Guo, Qi Zhang, Lining Xing and Songtao Lv
To develop an automated system for identifying and repairing cracks in asphalt pavements, addressing the urgent need for efficient pavement maintenance solutions amidst increasing…
Abstract
Purpose
To develop an automated system for identifying and repairing cracks in asphalt pavements, addressing the urgent need for efficient pavement maintenance solutions amidst increasing workloads and decreasing budgets.
Design/methodology/approach
The research was conducted in two main stages: Crack identification: Utilizing the U-Net deep learning model for pixel-level segmentation to identify pavement cracks, followed by morphological operations such as thinning and spur removal to refine the crack trajectories. Automated crack repair path planning: Developing an enhanced hybrid ant colony greedy algorithm (EAC-GA), which integrates the ant colony (AC) algorithm, greedy algorithm (GA) and three local enhancement strategies – PointsExchange, Cracks2OPT and Nearby Cracks 2OPT – to plan the most efficient repair paths with minimal redundant distance.
Findings
The EAC-GA demonstrated significant advantages in solution quality compared to the GA, the traditional AC and the AC-GA. Experimental validation on repair areas with varying numbers of cracks (16, 26 and 36) confirmed the effectiveness and scalability of the proposed method.
Originality/value
The originality of this research lies in the application of advanced deep learning and optimization algorithms to the specific problem of pavement crack repair. The value is twofold: Technological innovation in the field of pavement maintenance, offering a more efficient and automated approach to a common and costly issue. The potential for significant economic and operational benefits, particularly in the context of reduced maintenance budgets and increasing maintenance demands.
Details
Keywords
Yuchun Yao, Yan Wang, Lining Xing and Hao Xu
– This paper applies the knowledge-based genetic algorithm to solve the optimization problem in complex products technological processes.
Abstract
Purpose
This paper applies the knowledge-based genetic algorithm to solve the optimization problem in complex products technological processes.
Design/methodology/approach
The knowledge-based genetic algorithm (KGA) is defined as a hybrid genetic algorithm (GA) which combined the GA model with the knowledge model. The GA model searches the feasible space of optimization problem based on the “neighborhood search” mechanism. The knowledge model discovers some knowledge from the previous optimization process, and applies the obtained knowledge to guide the subsequent optimization process.
Findings
The experimental results suggest that the proposed KGA is feasible and available. The effective integration of GA model and knowledge model has greatly improved the optimization performance of KGA.
Originality/value
The technological innovation of complex products is one of effective approaches to establish the core competitiveness in future. For this reason, the KGA is proposed to the technological processes optimization of complex products.
Details
Keywords
Wenzhang Sun, Jiawei Zhu and Xuhui Wang
The purpose of this study is to investigate the impact of board secretaries’ characteristics on annual report readability using an original method that evaluates the readability…
Abstract
Purpose
The purpose of this study is to investigate the impact of board secretaries’ characteristics on annual report readability using an original method that evaluates the readability of Chinese characters.
Design/methodology/approach
The authors manually collect board secretaries’ characteristics from the China Securities Market and Accounting Research database and obtain annual reports from the China Information website. Ordinary least square regression is applied to evaluate the impact, and then robustness tests and additional regression analyses are conducted.
Findings
Board secretaries’ legal-professional expertise, international expertise and role duality improve annual report readability. However, their political connections are negatively associated with it. The effect of expertise (role duality) is more pronounced for firms with lower ex ante litigation risk (board secretaries with equity holdings). Furthermore, higher readability increases the compensation of board secretaries, whereas lower readability increases their turnover. Finally, annual report readability is positively related to firm performance.
Research limitations/implications
The authors only investigate listed firms in China from 2007 to 2017 because of the difficulties of obtaining data and text mining.
Practical implications
The authors provide managerial insights for regulators aiming to establish an effective governance mechanism with Chinese characteristics. First, certain requirements for board secretaries’ expertise can improve annual report readability. Further, firms can consider appointing board members or senior executives as board secretaries to enhance disclosure quality.
Originality/value
To the best of the authors’ knowledge, this study is the first to verify the effect of board secretaries’ characteristics on disclosure quality, especially annual report readability. Moreover, this study proposes a novel measure of annual report readability for Chinese texts.
Details
Keywords
Effiezal Aswadi Abdul Wahab, Akmalia M. Ariff, Marziana Madah Marzuki and Zuraidah Mohd Sanusi
The purpose of this paper is to examine the relationship between political connections and corporate tax aggressiveness in Malaysia. In addition, this paper investigates the…
Abstract
Purpose
The purpose of this paper is to examine the relationship between political connections and corporate tax aggressiveness in Malaysia. In addition, this paper investigates the relationship between corporate governance variables and corporate tax aggressiveness. Next, the study investigates the mitigating role of corporate governance in the relationship between political connections and corporate tax aggressiveness.
Design/methodology/approach
The sample of this study is based on 2,538 firm-year observations during the 2000-2009 periods. This study employs a panel least square regression with both period and industry fixed effects. The study retrieved the corporate governance variables from the downloaded annual reports, whilst the remaining data were collected from Compustat Global.
Findings
This study finds that politically connected firms are more tax aggressive than non-connected firms. Furthermore, the study finds that large board size decreases the likelihood of tax aggressiveness and a non-linear relationship exists between institutional ownership and tax aggressiveness suggesting increase in monitoring as the ownership increases. However, the study finds no evidence to suggest that corporate governance mitigates the influence of political connections in promoting tax aggressiveness behavior. The findings suggest that the impact of political connections could outweigh the benefits of changes in corporate governance in Malaysia.
Research limitations/implications
The data are not recent, but it reflects a rather longitudinal research period.
Originality/value
This paper extends the literature of tax research in Malaysia which is in its’ infancy stage. Furthermore, it investigates the role of political connections in tax-planning research.
Details
Keywords
Sandra Maria Correia Loureiro, Ricardo Godinho Bilro and Fernando José de Aires Angelino
The purpose of this paper is to review studies on the use of virtual reality (VR) and gamification to engage students in higher education for marketing issues to identify the…
Abstract
Purpose
The purpose of this paper is to review studies on the use of virtual reality (VR) and gamification to engage students in higher education for marketing issues to identify the research topics, the research gaps and to prepare a future research agenda.
Design/methodology/approach
A literature review is performed based on two search terms applied to Web of Science, resulting in a final pool of 115 articles. A text-mining approach is used to conduct a full-text analysis of papers related to VR and gamification in higher education. The authors also compare the salient characteristics presented in the articles.
Findings
From this analysis, five major research topics are found and analysed, namely, teaching methodologies and education, experience and motivation, student engagement, applied theories in VR and gamification. Based on this and following the theory concept characteristics methodology framework, the paper provides directions for future research.
Originality/value
There is no comprehensive review exploring the topics, theories, constructs and methods used in prior studies concerning VR and gamification applied to higher education services based on all the articles published in well-regarded academic journals. This review seeks to provide deeper insights, to help scholars contribute to the development of this research field.
Propósito
En este documento se revisan los estudios sobre el uso de la realidad virtual (RV) y la Gamificación para involucrar a los estudiantes en la educación superior en marketing, se identifican los principales temas de investigación tratados, las lagunas de investigación y se sugiere una agenda futura de investigación.
Diseño/metodología/enfoque
Una revisión de la literatura basada en dos búsquedas en Web of Science (WOS) permitió identificar 115 artículos. La minería de textos se utilizó para realizar un análisis de texto completo de los artículos relacionados con RV y gamificación en la educación superior. Los autores también compararon las características más destacadas de los artículos.
Hallazgos
A partir de este análisis, se encuentran y analizan cinco grandes temas de investigación: metodologías de enseñanza y educación, experiencia y motivación, compromiso de los estudiantes, aplicadas a la RV y la gamificación. Basándose en esto y siguiendo el marco del TCCM, el artículo proporciona una agenda futura de investigación.
Originalidad/valor
No hay una revisión exhaustiva que explore los temas, las teorías, construcciones y métodos utilizados en estudios anteriores relativos a RV y gamificación aplicados a servicios de educación superior basados en todos los artículos publicados en revistas académicas. Esta revisión proporciona una panorámica más detallada y sugiere a los académicos nuevas líneas de trabajo para seguir desarrollando este campo de investigación.
目的
本文的目的是回顾为了提高学生参与高等教育而使用虚拟现实(VR)和游戏化的营销方面的研究,以确定它们的研究主题,研究差距,并以此准备未来的研究议程。
文章设计/方法
本文的文献综述是基于Web of Science的两个搜索词进行的,最终搜索出115篇文章。本文采用文本挖掘方法,对与高等教育中的虚拟现实和游戏化相关的论文进行全文分析。作者还比较了这些文章中呈现的显著特征。
研究结果
从这一调查中,我们发现并分析了五大研究主题,即教学方法与教育、体验与动机、学生参与、虚拟现实应用理论和游戏化。在此基础上,遵循理论概念、特征、方法论框架,为今后的研究提供了方向。
本文独创性/价值
目前,在权威学术期刊上发表的所有文章,都没有对以往关于虚拟现实和游戏化应用于高等教育服务的研究的主题、理论、结构和方法进行全面的综述。本文旨在提供更深刻的见解,以帮助学者们为这一研究领域的发展做出贡献。
Details
Keywords
Khalid Farooq and Mohd Yusoff Yusliza
This research offered a systematic and comprehensive literature review in analysing current studies on employee ecological behaviour (EEB) strategies and settings to determine…
Abstract
Purpose
This research offered a systematic and comprehensive literature review in analysing current studies on employee ecological behaviour (EEB) strategies and settings to determine various emphasised workplace ecological behaviour areas and contribute a precise mapping for future research.
Design/methodology/approach
This systematic literature review method involved 106 peer-reviewed articles published in reputable academic journals (between 2000 and the first quarter of 2021). This study was confined to a review of empirical papers derived from digital databases encompassing the terms ‘Employee green behaviour’, ‘Green behaviour at workplace’, ‘Employee ecological behaviour’, ‘Employee Pro-environmental behaviour’ and ‘Pro-environmental behaviour at workplace’ in the titles.
Findings
This study identified relevant journal articles (classified as EEB at work) from the current body of knowledge. Notably, much emphasis was identified on EEB over the past two decades. Overall, most studies employing quantitative approaches in both developed and emerging nations. Notably, ecological behaviour application garnered the most significant attention from scholars among the four focus areas in the literature review: (i) EEB concepts, models, or reviews, (ii) EEB application, (iii) EEB determinants and (iv) EEB outcomes.
Practical implications
Significant literature gaps indicate this field to be a relatively novel phenomenon. Thus, rigorous research on the topic proves necessary to develop a holistic understanding of the subject area.
Originality/value
This study expands the current body of knowledge by providing the first comprehensive systematic review on EEB themes, methods, applications, determinants, contextual focus, outcomes and recommending future research agenda.
Details
Keywords
Rui Wang, Mengxuan Li, Xing Liu and Yanli Sun
This study aims to elaborate on the microencapsulation of the plant extract (PE, from Camellia sinensis leaf, clover flower and cocoa flower) and the preparation of a slow-release…
Abstract
Purpose
This study aims to elaborate on the microencapsulation of the plant extract (PE, from Camellia sinensis leaf, clover flower and cocoa flower) and the preparation of a slow-release lining fabric loading the PE microcapsule.
Design/methodology/approach
PE was microencapsulated into polyvinyl alcohol (PVA) shells through interfacial polymerization. The morphology, thermal stability, slow-release property and drug loading ratio of the PVA/PE microcapsules were characterized to ensure the availability in coating finishing. To find the optimum parameters, the composite fabrics were prepared from non-woven fabrics coated by calcium alginate hydrogel, which glued mass fractions of microcapsules and dried in different ways. To evaluate the effectiveness, a lipase enzyme activity test was conducted.
Findings
Under optimal conditions, the PVA/PE microcapsules with smooth surface have an average particle size of 14.5 um, and they are expected to reach a loading ratio of 38.5 per cent while remaining stable under 220°C. Given a microcapsule of 4 per cent (of the mass), the composite fabric has a good hand feeling, being prepared through calcium chloride coating. It is shown that the inhibition ratios of the microcapsules and composite fabrics on lipase are 31.3 and 21.0 per cent, respectively.
Research limitations/implications
The composite fabric could be prepared through the other finishing methods such as padding and printing. In addition, the release mechanism of the composite could be studied.
Practical implications
This study provided a simple and effective way to prolong the duration of PE. This way was conductive to protect environmental sensitive PEs from being destroyed in compositing processes.
Originality/value
Preparing composite fabrics for transdermal delivery system was novel and other kind of plant extracts could be used in this way.
Details
Keywords
The purpose of this paper is to provide the historical background of genealogical records and analyze the value of Chinese genealogical research through the study of names and…
Abstract
Purpose
The purpose of this paper is to provide the historical background of genealogical records and analyze the value of Chinese genealogical research through the study of names and genealogical resources.
Design/methodology/approach
The paper examines the historical evolution and value of Chinese genealogical records, with the focus on researching the Islamic Chinese names used by the people living in Guilin. The highlight of this paper includes the analysis and evolution of the Islamic Chinese names commonly adopted by the local people in Guilin. It concludes with the recommendations on emphasizing and making the best use of genealogical records to enhance the research value of Chinese overseas studies.
Findings
The paper covers the history of Islam and describes how the religion was introduced into China, as well as Muslims' ethnicity and identity. It also places focus on the importance of building a research collection in Asian history and Chinese genealogy.
Research limitations/implications
This research study has a strong subject focus on Chinese genealogy, Asian history, and Islamic Chinese surnames. It is a narrow field that few researchers have delved into.
Practical implications
The results of this study will assist students, researchers, and the general public in tracing the origin of their surnames and developing their interest in the social and historical value of Chinese local history and genealogies.
Social implications
The study of Chinese surnames is, by itself, a particular field for researching the social and political implications of contemporary Chinese society during the time the family members lived.
Originality/value
Very little research has been done in the area of Chinese local history and genealogy. The paper would be of value to researchers such as historians, sociologists, ethnologists and archaeologists, as well as students and anyone interested in researching a surname origin, its history and evolution.
Details
Keywords
Zheng Chen, Eleanor Doyle and Connell Fanning
Penrose introduced the concept of “unused services” which she identified as the internal inducement to firm growth. The purpose of this paper is to explore “unused services”…
Abstract
Purpose
Penrose introduced the concept of “unused services” which she identified as the internal inducement to firm growth. The purpose of this paper is to explore “unused services”, insufficiently examined in the literature to date, by applying Eastern conceptual thinking to refine Penrose's arguments.
Design/methodology/approach
The centrality of “unused services” to Penrose's theory is highlighted. The rationale for a general propensity of entrepreneurial managers to overlook the generation of such services in practice is developed and two Chinese concepts (Xing and Shi from Sun Tzu) are employed to work through their implications for Penrose's concept.
Findings
The continuous availability of unused services represents the firm's propensity to grow (Shi) and is derived from the disposition of existing resources (Xing). The authors' cross‐cultural perspective highlights the fundamental and inherent force governing the growth of the firm as the process through which the management team makes meaning of existing and potential productive resources to explore and exploit their unused services.
Practical implications
Greater focus is required on the relationship between a firm's physical resources and the thinking and sense‐making of its managers. The art of achieving growth from a firm's productive resources arises from the meaning‐making capability and progression in managerial thinking of the management team, facilitating its members to “see” and exploit the inherent force for growth available in unused services.
Originality/value
The paper's cross‐cultural perspective permits refinement of Penrose's theory true to her focus on the inherent incentives and constraints on firm growth. Thus, thinking is advanced in terms of exploring the dominant factor governing the identification of potential productive opportunities within firms, i.e. their source of growth. Implications for practice are provided in the research agenda.
Details
Keywords
Gang Wei, Zhiyuan Mu, Weihao Feng, Yongjie Qi and Binglai Guo
The aim of this study is to investigate the horizontal displacement effects of foundation pit excavation on adjacent metro stations and shield tunnel composite structures. It…
Abstract
Purpose
The aim of this study is to investigate the horizontal displacement effects of foundation pit excavation on adjacent metro stations and shield tunnel composite structures. It seeks to develop a theoretical calculation method capable of accurately assessing these engineering impacts, aiming to provide practical assistance for engineering applications.
Design/methodology/approach
This study introduces a model for shield tunnel segments incorporating rotation and misalignment, considering the constraints of metro stations. It establishes a displacement model for tunnel-station combinations during foundation pit excavation, deriving a formula for calculating station-proximal tunnel horizontal displacements. The method's accuracy is validated against field data from three engineering cases. The research also explores variations in tunnel displacement, inter-ring shear force, misalignment and rotation angle under different spatial relationships between pits, tunnels and stations.
Findings
This study models uneven deformation between stations and tunnels due to bending stiffness and shear constraints. It enhances the misalignment model with station-induced shear effects and introduces coefficients for their mutual interaction. Results show varied responses based on pit-station-tunnel positioning: minimal displacement near pit edges (coefficients around 0.1) and significant effects near pit centers (coefficients from 0.4 to 0.5). “Whip effect” from station constraints affects tunnel displacement, shear force, misalignment and rotation, with fluctuations decreasing with distance from excavation areas.
Originality/value
This study demonstrates significant originality and value. It introduces a novel displacement model for tunnel-station combinations considering station constraints, addressing theoretical calculations of horizontal displacement effects from foundation pit excavation on metro stations and shield tunnel structures. Through validation with field data and parameter studies, the concept of influence coefficients is proposed, offering insights into variations in structural responses under different spatial relationships. This research provides crucial technical support and decision-making guidance for optimizing designs and facilitating practical construction in similar engineering projects.
Details