Ruqing Bai, Hakim Naceur, Jinglei Zhao, Jin Yi, Jie Ma, Huayan Pu and Jun Luo
In this paper, the standard Peridynamic Timoshenko beam model accounting for the shear deformation is chosen to describe the thick beam kinematics. Unfortunately, when applied to…
Abstract
Purpose
In this paper, the standard Peridynamic Timoshenko beam model accounting for the shear deformation is chosen to describe the thick beam kinematics. Unfortunately, when applied to very thin beam structures, the standard Peridynamics (PD) encounters the shear locking phenomenon, leading to incorrect solutions.
Design/methodology/approach
PD differs from classical continuum mechanics and other nonlocal theories that do not involve spatial derivatives of the displacement field. PD is based on the integral equation instead of differential equations to handle discontinuities and other singularities.
Findings
The shear locking can be successfully alleviated using the developed selective integration method. In particular, this technique has been implemented in the standard PD, which allows an accurate result for a wide range of slenderness from very thin to thick (10 < L/t < 103) structures. It can also accelerate the computational time for particular dynamic problems using fewer neighboring integration particles. Several numerical examples are solved to demonstrate the effectiveness of the proposed method for modeling beam structures.
Originality/value
The paper highlights the severe shear locking phenomenon in the Peridynamic Timoshenko beam available in the literature, especially for very thin structures. A new alternative for the alleviation of shear locking in the Peridynamic Timoshenko beam, using selective integration. Hence the developed Peridynamic Timoshenko beam model is effective for thin and thick structures. A new peridynamic formulation for the low-velocity impact beam models is presented and validated.
Highlights
The paper highlights the severe shear locking phenomenon in the Peridynamic Timoshenko beam proposed in the literature, especially for very thin structures.
The developed Peridynamic Timoshenko beam model based on selective integration is effective for thin and thick structures.
A new peridynamic formulation for the low-velocity impact beam models is presented and validated.
The paper highlights the severe shear locking phenomenon in the Peridynamic Timoshenko beam proposed in the literature, especially for very thin structures.
The developed Peridynamic Timoshenko beam model based on selective integration is effective for thin and thick structures.
A new peridynamic formulation for the low-velocity impact beam models is presented and validated.
Details
Keywords
Shaoyan Xu, Tao Wang, Congyan Lang, Songhe Feng and Yi Jin
Typical feature-matching algorithms use only unary constraints on appearances to build correspondences where little structure information is used. Ignoring structure information…
Abstract
Purpose
Typical feature-matching algorithms use only unary constraints on appearances to build correspondences where little structure information is used. Ignoring structure information makes them sensitive to various environmental perturbations. The purpose of this paper is to propose a novel graph-based method that aims to improve matching accuracy by fully exploiting the structure information.
Design/methodology/approach
Instead of viewing a frame as a simple collection of keypoints, the proposed approach organizes a frame as a graph by treating each keypoint as a vertex, where structure information is integrated in edges between vertices. Subsequently, the matching process of finding keypoint correspondence is formulated in a graph matching manner.
Findings
The authors compare it with several state-of-the-art visual simultaneous localization and mapping algorithms on three datasets. Experimental results reveal that the ORB-G algorithm provides more accurate and robust trajectories in general.
Originality/value
Instead of viewing a frame as a simple collection of keypoints, the proposed approach organizes a frame as a graph by treating each keypoint as a vertex, where structure information is integrated in edges between vertices. Subsequently, the matching process of finding keypoint correspondence is formulated in a graph matching manner.
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Choon Ling Sim, Francis Chuah, Kit Yeng Sin and Yi Jin Lim
The purpose of this paper is to explore the moderating role of Lean Six Sigma (LSS) practices in explaining the relationship between quality management practices (QMPs) and…
Abstract
Purpose
The purpose of this paper is to explore the moderating role of Lean Six Sigma (LSS) practices in explaining the relationship between quality management practices (QMPs) and quality performance.
Design/methodology/approach
Partial least square-based structural equation modeling (PLS-SEM) was used to empirically examine the moderating effect of LSS practices on QMPs and quality performance in Malaysian medical device manufacturing companies.
Findings
Findings revealed that both QMPs and LSS practices have a significant and positive effect on quality performance. Furthermore, LSS practices served as a substitute for moderating the positive relationship between QMPs and quality performance in such a way that the relationship becomes weaker as LSS practices increase.
Originality/value
LSS is acknowledged as the most well-known hybrid methodology; however, due to its relative newness, it has not been studied in great detail. Unlike previous studies, this paper argued that Lean and Six Sigma practices are distinct from its predecessor TQM practices; moreover, both Lean and Six Sigma practices do not need to substitute QM/TQM practices instead of complimenting the QMPs. In addition, this study adds to the growing body of QM literature by empirically examine the effect of LSS practices in moderating the relationship between QMPs and quality performance.
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Yi Jin and Shenghua Zha
The purpose of this paper is to posit that coding should be considered as a critical part of new literacies. Teacher educators should first adopt the new literacies perspective…
Abstract
Purpose
The purpose of this paper is to posit that coding should be considered as a critical part of new literacies. Teacher educators should first adopt the new literacies perspective, and then prepare pre-service teachers to teach both traditional literacy and new literacies skills, especially preparing them how to weave coding into K-5 literacy curricula to cultivate younger learners’ new ways of expressions and computational thinking skills. To facilitate this educational transformation, low-cost Web 2.0 tools and apps were introduced as one practical approach, along with some literacy lesson ideas to help teacher educators and pre-service teachers begin to integrate coding into the K-5 literacy curricula.
Design/methodology/approach
This paper is a viewpoint paper.
Findings
A table of low-cost Web 2.0 tools was presented with sample lesson ideas.
Originality/value
More than ever, coding breaks the traditional definition of literacy as paper-based reading and writing. It empowers students to read, write and create with multimodality on multiple platforms. Weaving coding into the literacy curricula offers the window to promote both computational thinking and new literacies skills. Teacher educators, among all other stakeholders, should begin the efforts to prepare pre-service teachers to weave coding into the literacy curricula and other content areas in the teacher educations programs now.
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Keywords
Choon Ling Sim, Zeyun Li, Francis Chuah, Yi Jin Lim and Kit Yeng Sin
With the growing pressure to gain optimum level of quality and speed, Lean Six Sigma (LSS) practices have drawn considerable attention as a viable alternative for process…
Abstract
Purpose
With the growing pressure to gain optimum level of quality and speed, Lean Six Sigma (LSS) practices have drawn considerable attention as a viable alternative for process improvement. However, previous studies revealed that there is very little systematic and rigorous research to validate the claims. In this regard, this paper aims to empirically examine the effect of LSS practices on quality performance in the medical device manufacturing industry.
Design/methodology/approach
For this study, partial least square–based structural equation modeling (PLS-SEM) was used to empirically examine the effect of LSS practices on quality performance in Malaysian medical device manufacturing industry.
Findings
The findings of this paper revealed that LSS practices have a significant and positive effect on quality performance in the medical device manufacturing industry.
Practical implications
This paper will serve as a valuable implication for industry practitioners in providing them with a clearer managerial direction to exploit the strength of LSS practices to achieve company’s quality goals. Moreover, this study will serve as a basis for future LSS scholars, providing them with valuable insights and directions for future research.
Originality/value
This paper develops a conceptual LSS framework that captures the integrated nature of two methodologies and provides empirical evidence that supports the positive influence of LSS practices on quality performance; hence, it contributes to the growing body of LSS literature in both theoretical and empirical sense.
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Ruiwu Cao, Yi Jin, Yanze Zhang and Ming Cheng
The purpose of this paper is to propose the complementary design rules, give a quantitative comparison and analyze the force production mechanism of two kinds of primary wound…
Abstract
Purpose
The purpose of this paper is to propose the complementary design rules, give a quantitative comparison and analyze the force production mechanism of two kinds of primary wound field flux-switching linear (PWFFSL) motors.
Design/methodology/approach
PWFFSL motors have the merits of no use of rare-earth magnet, low cost and a wide operation range in which the armature windings and the field windings are all located at the short primary mover and the secondary is very robust. Hence, the PWFFSL motor is ideal for rail transportation systems which need a long stator and a wide speed range. To overcome the disadvantages of the existing PWFFSL motors, new complementary design rules will be proposed. Also, to offer a better PWFFSL motor for the rail transportation systems, it is necessary to investigate different structures of PWFFSL motors and give a comprehensive comparison. To predict the force performance of two kinds of PWFFSL motors with different secondary types, their flux density analysis and force production mechanism will be presented and compared.
Findings
The comparison result shows that the PWFFSL motor with toothed secondary can offer larger thrust force, higher force density and higher efficiency, whereas the PWFFSL motor with segmented secondary has the merits of lower force ripple, less use of stator iron, higher power factor and less critical saturation.
Research limitations/implications
Many PWFFSL motors with different primary/secondary pole pitches based on the proposed design principle have not been considered in this paper.
Originality/value
This paper has presented the air-gap flux analysis, proposed the complementary design rules for two kinds of PWFFSL motors with different secondary types and compared the electromagnetic performance of the two motors.
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Di Wang, Deborah Richards, Ayse Aysin Bilgin and Chuanfu Chen
In 2017, the Chinese Super League (CSL), the first professional football division in the People’s Republic of China (PRC), became the highest-spending league in the international…
Abstract
Purpose
In 2017, the Chinese Super League (CSL), the first professional football division in the People’s Republic of China (PRC), became the highest-spending league in the international players’ transfer market, with a total spending of €377m. Moreover, the government of the PRC is backing the CSL with an ambitious football plan. Therefore, the purpose of this paper is to examine the governance of the CSL by questioning the organisational viability of the league.
Design/methodology/approach
In addition to the relevant international literature, this study is based on 14 recent scholarly articles published in Mandarin from 2013 to 2018 to reflect the national academic debate. Moreover, website research on all CSL clubs has been conducted. The institutional analysis follows the integrative change model of Cunningham (2002) complemented by agency and bureaucracy theory.
Findings
The CSL still faces substantial governance problems caused by the divergence of goal setting, organisational inefficiencies and compliance issues. The organisational change is notably constrained by internal competitive value commitments and external power dependency.
Research limitations/implications
The institutional findings on the CSL provide a starting point for empirical studies. The approach contributes to the theory of sport governance processes.
Practical implications
The material and insights are informative for decision makers to evaluate the competitiveness of the CSL.
Originality/value
This paper is the first international in-depth analysis of the governance of the CSL using the body of knowledge published in Mandarin.
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Keywords
The SERVPERF (for Service Performance) and the HEdPERF (for Higher Education Performance) are two questionnaires for collecting customer/student feedback on service quality that…
Abstract
Purpose
The SERVPERF (for Service Performance) and the HEdPERF (for Higher Education Performance) are two questionnaires for collecting customer/student feedback on service quality that have been tested and used mainly in non‐Chinese contexts. The purpose of this paper is to adapt and initially validate a Chinese translation of these two instruments for application in the context of post‐secondary education in Hong Kong.
Design/methodology/approach
Given that a Chinese translation of the two questionnaires concerned has not been tested in this new response‐context, an exploratory approach was adopted by examining the psychometric properties of the SERVPERF scales and the HEdPERF scales via scale alpha, item‐correlation analysis and exploratory factor analysis using valid responses collected from 271 students.
Findings
The alpha values of both the SERVPERF scales and the HEdPERF scales are good or acceptable, with the latter better than the former in general. In the present study, the validity of employing the SERVPERF in the targeted response‐context is supported as all the five SERVERF dimensions have been cleanly identified in the exploratory factor analysis. However, only three out of the five HEdPERF dimensions were identified in the present study, and two of the identified dimensions are complex concepts with each of them exhibited as two factors in the exploratory factor analysis, casting doubt on the appropriateness of the direct employment of the HEdPERF in the targeted response‐context for the measurement of service quality.
Research limitations/implications
The students who participated in the present study were pursuing Project Yi Jin, which was a special one‐year post‐secondary programme in Hong Kong.
Originality/value
Taking both reliability and validity issues into consideration, this initial investigation indicates that the SERVPERF may be a more appropriate instrument than the HEdPERF for supporting quality assurance in the context of Hong Kong post‐secondary education, especially when multiple questionnaires will be used for collecting students' feedback on their various experiences at different levels, where it is important for these questionnaires to be, as much as possible, simple and non‐overlapping.