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1 – 10 of 474
Article
Publication date: 2 July 2024

Lei Yang, Fuhai Zhang, Jingbin Zhu and Yili Fu

The accuracy and reliability of upper limb motion assessment have received great attention in the field of rehabilitation. Grasping test is widely carried out for motion…

Abstract

Purpose

The accuracy and reliability of upper limb motion assessment have received great attention in the field of rehabilitation. Grasping test is widely carried out for motion assessment, which requires patients to grasp objects and move them to target place. The traditional assessments test the upper limb motion ability by therapists, which mainly relies on experience and lacks quantitative indicators. This paper aims to propose a deep learning method based on the vision system of our upper limb rehabilitation robot to recognize the motion trajectory of rehabilitation target objects automatically and quantitatively assess the upper limb motion in the grasping test.

Design/methodology/approach

To begin with, an SRF network is designed to recognize rehabilitation target objects grasped in assessment tests. Moreover, the upper limb motion trajectory is calculated through the motion of objects’ central positions. After that, a GAE network is designed to analyze the motion trajectory which reflects the motion of upper limb. Finally, based on the upper limb rehabilitation exoskeleton platform, the upper limb motion assessment tests are carried out to show the accuracy of both object recognition of SRF network and motion assessment of GAE network. The results including object recognition, trajectory calculation and deviation assessment are given with details.

Findings

The performance of the proposed networks is validated by experiments that are developed on the upper limb rehabilitation robot. It is implemented by recognizing rehabilitation target objects, calculating the motion trajectory and grading the upper limb motion performance. It illustrates that the networks, including both object recognition and trajectory evaluation, can grade the upper limb motion functionn accurately, where the accuracy is above 95.0% in different grasping tests.

Originality/value

A novel assessment method of upper limb motion is proposed and verified. According to the experimental results, the accuracy can be remarkably enhanced, and the stability of the results can be improved, which provide more quantitative indicators for further application of upper limb motion assessment.

Details

Industrial Robot: the international journal of robotics research and application, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0143-991X

Keywords

Article
Publication date: 1 October 2024

Tue Ngoc Hoang and Phong Ba Le

The purpose of this study is to explore the effect of transformational leadership (TL) on tacit and explicit knowledge sharing (KS) of teachers through the mediating role of…

Abstract

Purpose

The purpose of this study is to explore the effect of transformational leadership (TL) on tacit and explicit knowledge sharing (KS) of teachers through the mediating role of knowledge-centered school culture (KSC). This study also attempts to bring a deeper insight into the correlation between KSC and KS behaviors by exploring the moderating effect of perceived organizational support (POS).

Design/methodology/approach

The paper used a quantitative approach and structural equation modeling to examine the relationship among the latent factors in the research model using data collected from 293 teachers in Vietnamese universities.

Findings

The findings indicated that TL positively influences tacit and explicit KS behaviors of teachers directly or indirectly through its positive effect on KSC. In addition, the paper highlights the moderating role of POS in strengthening the impact of TL on tacit and explicit KS behaviors of teachers.

Research limitations/implications

This paper emphasizes the need to practice TL as an effective pathway to foster tacit and explicit KS behaviors of teachers in higher education.

Originality/value

The paper significantly contributes to enhancing understanding of the antecedent role of TL in fostering knowledge-centered culture and KS behaviors of teachers under the moderating effects of POS in higher education.

Details

The Learning Organization, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0969-6474

Keywords

Article
Publication date: 24 April 2024

Son Thanh Than, Phong Ba Le, Cong Thanh Ha and Dung Thi Nguyet Nguyen

Due to the vital role of innovation for firms to respond to the change and achieve competitive advantage, the purpose of this study is to investigate the influence of…

Abstract

Purpose

Due to the vital role of innovation for firms to respond to the change and achieve competitive advantage, the purpose of this study is to investigate the influence of knowledge-oriented leadership (KOL) on innovation performance via the mediating role of knowledge sharing (KS). This study also explores the moderating role of organizational justice in the relationship between KS and innovation performance.

Design/methodology/approach

Analysis of moment structures and structural equation modeling are applied to examine the relationship among the latent factors in the proposed research model using data collected from 335 participants in 121 manufacturing and service firms in Vietnam.

Findings

The findings revealed that KOL serves as a key precursor to foster innovation performance directly or indirectly through active and passive KS behaviors. In addition, the paper highlights the moderating role of organizational justice in strengthening the impact of KS activities on innovation performance.

Research limitations/implications

By highlighting the important role of KOL for stimulating KS behaviors, this paper provides a valuable understanding and novel approach for firms to improve innovation performance. The research findings support the idea that building a climate of justice is crucial to enhance the effects of KS on innovation performance.

Originality/value

This study contributes to bridging the research gaps in the literature and advances the insights of how KOL directly and indirectly stimulates innovation performance via mediating roles of active and passive KS processes under the climate of justice.

Details

Global Knowledge, Memory and Communication, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2514-9342

Keywords

Article
Publication date: 7 November 2022

Phong Thai Le and Phong Ba Le

This study aims to analyze and clarify the influence of knowledge-oriented leadership (KOL) on radical and incremental innovation via the mediating role of knowledge sharing (KS)…

Abstract

Purpose

This study aims to analyze and clarify the influence of knowledge-oriented leadership (KOL) on radical and incremental innovation via the mediating role of knowledge sharing (KS). This study also explores the relationship between KS and two aspects of innovation capability by examining the moderating role of market turbulence.

Design/methodology/approach

The research model was tested using a structural equation modeling design based on survey data collected from 335 participants in 132 manufacturing and service firms in Vietnam.

Findings

The findings revealed that KOL serves as a key precursor to foster radical and incremental innovation directly or indirectly through KS processes. In addition, it highlights the moderating role of market turbulence in strengthening the impact of KS activities on two forms of innovation capability.

Research limitations/implications

By highlighting the important role KOL practice for stimulating KS behaviors, this paper provides a valuable understanding and novel approach for firms to improve radical and incremental. The research findings support the idea that market turbulence significantly contributes to increasing the effects of KS on innovation capability.

Originality/value

This study contributes to bridging research gaps in the the literature and advances the insights of how KOL directly and indirectly fosters innovation capability via the mediating role of KS processes under the market turbulence.

Details

VINE Journal of Information and Knowledge Management Systems, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2059-5891

Keywords

Article
Publication date: 3 October 2023

Hongna Tian, Jingge Han, Meiling Sun and Xichen Lv

Toward sustainable development, radical green innovation (RGI) is necessary. Despite extensive research on the factors influencing green innovation, few studies have been…

Abstract

Purpose

Toward sustainable development, radical green innovation (RGI) is necessary. Despite extensive research on the factors influencing green innovation, few studies have been conducted on the precursors. Based on upper echelons (UE) theory, dynamic capability (DC) theory, “stimulus-organism-response” (SOR) theory, social information processing (SIP) theory and cognitive appraisal (CA) theory of emotion, the study explores how digital leadership (DL) affects RGI and investigates the mediating effects of green organizational identity (GOI) and the moderating effects of digital threat (DT) and technology for social good (TSG), as well as the multiple concurrent causalities that trigger high RGI.

Design/methodology/approach

The method of combining structural equation model (SEM) and fuzzy-set qualitative comparative analysis (fs QCA) is adopted in the study. Data from 233 questionnaires were collected at two different time points.

Findings

This study's findings indicate that the four dimensions of DL can positively influence RGI and GOI partially mediates between the four dimensions of DL and RGI. DT has a negative moderating effect between DL and GOI, while TSG is positively regulated between them, DT and TSG linkage moderates the partial mediating effect of GOI in DL and RGI. Further, fs QCA is used to analyze the causal complexity of DL dimensions and GOI to RGI and nine effective configuration paths are identified. It is found that the synergy of digital thinking ability (DTA), digital detection ability (DDA), digital social ability (DSA), digital reserve ability (DRA) and GOI is crucial to high RGI. Among them, GOI core appears the most times, indicating that GOI plays a vital role in improving enterprise RGI.

Originality/value

This study expands the literature on leadership and innovation by constructing a framework of “DL-GOI-RGI” and exploring the transmission of GOI and the boundary effect of DT and TSG. The study used fs QCA and SEM to better understand the statistical associations and the set relations between the conjunctions and conditions.

Details

European Journal of Innovation Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1460-1060

Keywords

Article
Publication date: 4 June 2024

Caiyun Cui, Tingyu Xie, Yong Liu, Meng Liu, Huan Cao and Huilian Li

This paper aims to explore the influencing factors of public perceived efficacy of emergency infrastructure projects based on the triadic interactive determinism, and analyze the…

Abstract

Purpose

This paper aims to explore the influencing factors of public perceived efficacy of emergency infrastructure projects based on the triadic interactive determinism, and analyze the relationship among these factors.

Design/methodology/approach

Based on the triadic interactive determinism, we explored the factors influencing public perceived efficacy of emergency infrastructure project and empirically verified the relationship among these factors and perceived efficacy by using data drawn from a questionnaire survey of 491 residents near Leishenshan Hospital, Jiangxia District, Wuhan, China.

Findings

Prior experience, emotional response, personal expectation, public trust, context message and interactivity level, namely behavior, individual and environment, affect the perceived efficacy of public emergency infrastructure projects.

Practical implications

The results offer an insight into public perceived efficacy of emergency infrastructure project from the perspective of antecedents in a triadic reciprocal determinism, which provides a reference basis for the sustainable development of the emergency infrastructure projects. This study also suggests valuable practical implications to government departments to improve the quality of administrative decision-making effectively.

Originality/value

Although existing studies have found some influencing factors of public perceived efficacy in general infrastructure, there is still a lack of systematic carding and quantitative description of influencing factors of public perceived efficacy of emergency infrastructure projects. This study bridges this gap by exploring the determinants and their influencing relationship of public perceived efficacy especially for emergency infrastructure projects.

Details

Engineering, Construction and Architectural Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0969-9988

Keywords

Article
Publication date: 17 September 2024

Mohammad Yaghtin and Youness Javid

The purpose of this research is to address the complex multiobjective unrelated parallel machine scheduling problem with real-world constraints, including sequence-dependent setup…

Abstract

Purpose

The purpose of this research is to address the complex multiobjective unrelated parallel machine scheduling problem with real-world constraints, including sequence-dependent setup times and periodic machine maintenance. The primary goal is to minimize total tardiness, earliness and total completion times simultaneously. This study aims to provide effective solution methods, including a Mixed-Integer Programming (MIP) model, an Epsilon-constraint method and the Nondominated Sorting Genetic Algorithm (NSGA-II), to offer valuable insights into solving large-sized instances of this challenging problem.

Design/methodology/approach

This study addresses a multiobjective unrelated parallel machine scheduling problem with sequence-dependent setup times and periodic machine maintenance activities. An MIP model is introduced to formulate the problem, and an Epsilon-constraint method is applied for a solution. To handle the NP-hard nature of the problem for larger instances, an NSGA-II is developed. The research involves the creation of 45 problem instances for computational experiments, which evaluate the performance of the algorithms in terms of proposed measures.

Findings

The research findings demonstrate the effectiveness of the proposed solution approaches for the multiobjective unrelated parallel machine scheduling problem. Computational experiments on 45 generated problem instances reveal that the NSGA-II algorithm outperforms the Epsilon-constraint method, particularly for larger instances. The algorithms successfully minimize total tardiness, earliness and total completion times, showcasing their practical applicability and efficiency in handling real-world scheduling scenarios.

Originality/value

This study contributes original value by addressing a complex multiobjective unrelated parallel machine scheduling problem with real-world constraints, including sequence-dependent setup times and periodic machine maintenance activities. The introduction of an MIP model, the application of the Epsilon-constraint method and the development of the NSGA-II algorithm offer innovative approaches to solving this NP-hard problem. The research provides valuable insights into efficient scheduling methods applicable in various industries, enhancing decision-making processes and operational efficiency.

Details

Journal of Modelling in Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1746-5664

Keywords

Article
Publication date: 16 July 2024

Andrew Miceli, Grant Bevil and Jutima Simsiriwong

Struck-by accidents (i.e. being hit by a falling object) are a leading cause of traumatic brain injuries in the construction industry. Despite the critical role of hard hats in…

Abstract

Purpose

Struck-by accidents (i.e. being hit by a falling object) are a leading cause of traumatic brain injuries in the construction industry. Despite the critical role of hard hats in minimizing such injuries, their overall design has not appreciably changed in decades. Therefore, this study aims to explore the potential benefits of modifying commercially available hard hat designs by incorporating a compliant cantilever and a sacrificial, energy-absorbing structure to enhance their protective capabilities against impacts.

Design/methodology/approach

This study involved conducting experimental impact tests to obtain the head acceleration attenuation using hard hats with a variety of compliant cantilever lattice insert designs. These lattice inserts were additively manufactured using three polymeric materials, including polylactide (PLA), acrylonitrile butadiene styrene, high-impact polystyrene and three porosity levels. A Hybrid III head/neck assembly was fitted with each hard hat design, and experimental drop tests were conducted using a 1.8-kg steel impactor dropped from 1.83 m. The maximum acceleration and head injury criterion (HIC) values were obtained for each test.

Findings

Analysis of variance revealed that HIC was significantly reduced for all lattices with 56% porosity (p < 0.023) compared to the control (unmodified) hard hat. The most effective insert was found to be a PLA insert with 56% porosity, which reduced the HIC value by 38% compared to the control (unmodified) hard hat, with a statistically significant p-value of 0.018.

Originality/value

The data present in this study reveals that simple and inexpensive modifications can be made to existing hard hat designs to reduce injury risk from overhead impacts.

Details

Journal of Engineering, Design and Technology , vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1726-0531

Keywords

Article
Publication date: 30 September 2024

Ihab Al-Qazzaz, Carlos Arturo Osorio-Sandoval, Serik Tokbolat and Georgia Thermou

Despite several attempts to integrate building information modeling (BIM) with building circularity assessment (BCA), no systematic review has yet been carried out on this topic…

Abstract

Purpose

Despite several attempts to integrate building information modeling (BIM) with building circularity assessment (BCA), no systematic review has yet been carried out on this topic to the best knowledge of the authors. The objective of this review is to fill this gap by reviewing the current attempts, identifying the tools and exploring the state-of-the-art in BIM and BCA.

Design/methodology/approach

A systematic literature review (SLR) methodology was employed. A total of 30 documents published between 2015 and 2023 were selected and analyzed across the concept, methodology and value dimensions.

Findings

There has been an increase in the development of BIM-based BCA tools in recent years, with the Netherlands taking the lead. Most tools developed were based on the material circularity indicator (MCI) and by using Autodesk Revit as BIM software. Three integration approaches for BIM with BCA were identified: (1) using an external platform; (2) linking an external database to BIM and (3) within the BIM environment. The review has revealed that still there is no standard for BCA, and interoperability and lack of circularity databases are the major challenges.

Research limitations/implications

Although the paper has made contributions, it is important to recognize certain limitations. One of these is the inability to explore all the tools in depth as some of them are not available or accessible. Another limitation is the relatively small number of studies that were reviewed, primarily because there is a lack of research in this area due to the BIM-based BCA is still in its infancy compared to the BIM-based LCA.

Originality/value

This study contributes to providing a comprehensive up-to-date overview of recent advancements in BIM–BCA integration, as well as a framework for understanding its concept, methodology and value dimensions. It also highlights significant areas where practitioners and researchers can identify knowledge gaps and future research directions.

Details

Built Environment Project and Asset Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2044-124X

Keywords

Open Access
Article
Publication date: 18 October 2024

Haipeng He, Zirui He and Xiaodong Nie

This study aims to assess the level of development of the digital economy by constructing a comprehensive measurement system. It explores regional differences within China’s…

Abstract

Purpose

This study aims to assess the level of development of the digital economy by constructing a comprehensive measurement system. It explores regional differences within China’s digital economy, highlighting the varying degrees of digital infrastructure, industrialization, governance and innovation capabilities across provinces.

Design/methodology/approach

A multidimensional analytical framework including digital infrastructure, industrialization, digitization, governance and innovation was developed. Entropy methods were used to calculate the weights of each dimension. The coupled coordination degree model and the Tobit model with random effects panel are applied to analyze the current situation, discrepancies and influencing factors.

Findings

This study reveals significant regional differences in the development of China’s digital economy, characterized by a pattern of “strong in the east, weak in the west; high in the south, low in the north.” This geographical imbalance exacerbates the “polarization effect” and the “siphon effect,” where resources and growth tend to concentrate in already developed areas, further intensifying regional inequalities. The development of the digital economy is driven by principles of innovation, coordination and sharing, which facilitate the creation and dissemination of new technologies and collaboration across different sectors. However, this progress is also constrained by considerations of environmental sustainability (green) and economic openness.

Originality/value

This paper contributes to the body of knowledge by providing a novel multidimensional measurement system for the level of digital economy development. The unique application of the coupled coordination degree model and Tobit model to analyze regional differences and influencing factors provides insights into the dynamics of China’s digital economy.

Details

Journal of Internet and Digital Economics, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2752-6356

Keywords

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