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1 – 10 of 35Bin Zheng, Yi Cai and Kelun Tang
The purpose of this paper is to realize the lightweight of connecting rod and meet the requirements of low energy consumption and vibration. Based on the structural design of the…
Abstract
Purpose
The purpose of this paper is to realize the lightweight of connecting rod and meet the requirements of low energy consumption and vibration. Based on the structural design of the original connecting rod, the finite element analysis was conducted to reduce the weight and increase the natural frequencies, so as to reduce materials consumption and improve the energy efficiency of internal combustion engine.
Design/methodology/approach
The finite element analysis, structural optimization design and topology optimization of the connecting rod are applied. Efficient hybrid method is deployed: static and modal analysis; and structure re-design of the connecting rod based on topology optimization.
Findings
After the optimization of the connecting rod, the weight is reduced from 1.7907 to 1.4875 kg, with a reduction of 16.93%. The maximum equivalent stress of the optimized connecting rod is 183.97 MPa and that of the original structure is 217.18 MPa, with the reduction of 15.62%. The first, second and third natural frequencies of the optimized connecting rod are increased by 8.89%, 8.85% and 11.09%, respectively. Through the finite element analysis and based on the lightweight, the maximum equivalent stress is reduced and the low-order natural frequency is increased.
Originality/value
This paper presents an optimization method on the connecting rod structure. Based on the statics and modal analysis of the connecting rod and combined with the topology optimization, the size of the connecting rod is improved, and the static and dynamic characteristics of the optimized connecting rod are improved.
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Hammad Bin Azam Hashmi, Ward Ooms, Cosmina L. Voinea and Marjolein C.J. Caniëls
This paper aims to elucidate the relationship between entrepreneurial orientation, reverse innovation and international performance of emerging economy multinational enterprises…
Abstract
Purpose
This paper aims to elucidate the relationship between entrepreneurial orientation, reverse innovation and international performance of emerging economy multinational enterprises (EMNEs).
Design/methodology/approach
The authors analyze archival data of Chinese limited companies between 2010 and 2016, including 11,230 firm-year observations about 1708 firms. In order to test the study’s mediation hypotheses, the authors apply an ordinary least square (OLS) regression.
Findings
The authors find evidence that the entrepreneurial orientation of EMNEs has a positive effect on reverse innovations. Furthermore, the authors find positive effects of reverse innovation on the international performance of EMNEs. This pattern of results suggests that the relationship between entrepreneurial orientation and international performance is partially mediated by reverse innovation.
Practical implications
The study’s findings help managers in EMNEs to promote reverse innovation by building and using their entrepreneurial orientation. It also helps them to set out and gauge the chances of success of their internationalization strategies. The findings also hold relevance for firms in developed economies as well, as they may understand which emerging economy competitors stand to threaten their positions.
Originality/value
The strategic role of reverse innovations – i.e. clean slate, super value and technologically advanced products originating from emerging markets – has generated considerable research attention. It is clear that reverse innovations impact the international performance of EMNEs. Yet how entrepreneurial orientation influences international performance is still underexplored. Thus, the current study clarifies the mechanism by examining and testing the mediating role of reverse innovation among the entrepreneurial orientation–international performance link.
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Islam Ali Elhadidy and Yongqiang Gao
Drawing on social information processing theory (SIP), this paper examines whether and how humble leadership affects employees' service improvisation (ESI) in the hospitality…
Abstract
Purpose
Drawing on social information processing theory (SIP), this paper examines whether and how humble leadership affects employees' service improvisation (ESI) in the hospitality industry. Further, the study investigates the mediating role of psychological safety and the moderating role of creative self-efficacy (CSE).
Design/methodology/approach
To test the proposed relationships, the study adopts a cross-sectional design, administering questionnaires to 456 frontline staff in Egypt’s hospitality industry across three main sectors: restaurants, hotels and travel agencies. SPSS 27 and AMOS 22 were used for statistical analysis.
Findings
The study reveals a positive relationship between humble leadership and ESI, partially mediated by psychological safety. Furthermore, CSE not only strengthens the relationship between psychological safety and ESI but also enhances the indirect effect of humble leadership on ESI via psychological safety.
Practical implications
The study offers valuable insights for practitioners in the hospitality industry. To boost ESI, organizations can incorporate humble leadership attributes into their leadership development programs. Fostering a psychologically safe workplace would facilitate the positive impact of humble leadership on ESI. Recognizing CSE as a pivotal moderator underscores the importance of strategically selecting and developing employees with high CSE. These insights aim to cultivate a more service-oriented and effective workforce in the hospitality industry.
Originality/value
This study significantly contributes to leadership research in the hospitality industry by uncovering a previously unexplored link between humble leadership and ESI. Exploring psychological safety as a mediator and CSE as a moderator enhances our comprehension of how and when humble leadership influences ESI.
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Francesco Antonio Perotti, Zoltan Rozsa, Michal Kuděj and Alberto Ferraris
Drawing on the microfoundations theory and rational choice sociology, this study aims to investigate knowledge-sharing microfoundations through knowledge sabotage behaviours in…
Abstract
Purpose
Drawing on the microfoundations theory and rational choice sociology, this study aims to investigate knowledge-sharing microfoundations through knowledge sabotage behaviours in the workplace. As such, it aims to shed light on the adverse impact of knowledge sabotage on a knowledge-sharing climate.
Design/methodology/approach
As a quantitative deductive study, it is based on information collected from 329 employees of European companies by self-administered online surveys. Data validity and reliability has been assessed through a confirmatory factor analysis, and data analysis was carried out by using a covariance-based structural equation modelling technique.
Findings
The findings from the empirical investigation supported the baseline hypotheses of the multilevel conceptual model, which is the positive relationship between organizational trust and environmental knowledge sharing. Then, recurring to a microfoundational exploration, this study supports the mediating indirect effect of job satisfaction and knowledge sabotage in affecting knowledge sharing as a social outcome.
Research limitations/implications
This study concurs to broaden knowledge-sharing awareness among scholars and practitioners, by focusing on knowledge sabotage as its most pernicious counterproductive behaviour. Furthermore, this research provides valuable guidance for the future development of research based on multilevel investigations.
Originality/value
This study builds on the need to explore the numerous factors that affect knowledge sharing in economic organizations, specifically focusing on knowledge sabotage. Adapting Coleman’s bathtub, the authors advance the first multilevel conceptual model used to unveil the knowledge-sharing microfoundations from the perspective of a counterproductive knowledge behaviour.
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The purpose of this paper is to scrutinise the effectiveness of four derivative exchanges’ enforcement efforts since 2007. These exchanges include the Commodity Exchange Inc. and…
Abstract
Purpose
The purpose of this paper is to scrutinise the effectiveness of four derivative exchanges’ enforcement efforts since 2007. These exchanges include the Commodity Exchange Inc. and ICE Futures US from the United States and ICE Futures Europe and the London Metal Exchange from the UK.
Design/methodology/approach
The paper examines 799 enforcement notices published by four exchanges through a behavioural science lens: HUMANS conceived by Hunt (2023) in Humanizing Rules: Bringing Behavioural Science to Ethics and Compliance.
Findings
The paper finds the effectiveness of the exchanges’ enforcement efforts to be a mixed picture as financial markets transition from the digital to artificial intelligence era. Humans remain a key cog in the wheel of market participants’ trading operations, albeit their roles have changed. Despite this, some elements of exchanges’ enforcement regimes have not kept pace with the move from floor to remote trading. However, in other respects, their efforts are or should be, effective, at least in behavioural terms.
Research limitations/implications
The paper’s findings are arguably limited to exchanges based in Anglophone jurisdictions. The information published by the exchanges is variable, making “like-for-like” comparisons difficult in some areas.
Practical implications
The paper makes several recommendations that, if adopted, could help exchanges to increase the potency of their enforcement programmes.
Originality/value
A key aim of the paper is to shift the lens through which the debate concerning the efficacy of exchange-level oversight is conducted. Hitherto, a legal lens has been used, whereas this paper uses a behavioural lens.
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Reza Salehzadeh and Mehran Ziaeian
This study aims to advance the understanding of humble leadership (HL) in health care.
Abstract
Purpose
This study aims to advance the understanding of humble leadership (HL) in health care.
Design/methodology/approach
This study presents a scoping review to explore and synthesize the existing knowledge in the literature. The search process encompassed three main online databases, PubMed, Scopus and Web of Science. Due to the novelty of the topic of HL in health care and the lack of research in this area, all articles published until the end of February 2023 were considered in this study.
Findings
A total of 18 studies were included. The results showed that in the period of 2019–2023 more attention was paid to HL in health care than in previous years. The research design used in these articles included quantitative (n = 13) and qualitative (n = 5) methods and the statistical population included nurses, hospital employees and health-care department managers. Based on the results obtained, the definition of HL can be divided into two general approaches, including self-evaluation and the way one treats others. In addition, humble leaders in the health-care sector should exhibit certain behavioral characteristics and finally, the results indicated that HL has several positive consequences; however, little attention has been paid to the factors influencing HL in health care.
Practical implications
This research will help practitioners gain a deeper understanding of the various applications of HL in health care.
Originality/value
To the best of the authors’ knowledge, no comprehensive research review has yet been conducted on the application of HL in health care.
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Mian M. Ajmal, Amin Jan, Mehmood Khan, Matloub Hussain and Anas A. Salameh
This study aims to identify and categorize the barriers and motivators to value co-creation and to establish its theoretical link with the five axioms of value co-creation.
Abstract
Purpose
This study aims to identify and categorize the barriers and motivators to value co-creation and to establish its theoretical link with the five axioms of value co-creation.
Design/methodology/approach
The study used a qualitative approach based on a bibliographic literature review for identifying barriers and motivators of value co-creation. Subsequently, this study grouped those barriers and motivators into three categories. It further linked those barriers and motivators with five axioms of value co-creation using the grounded theory.
Findings
Results based on the categorization of barriers show that the first category “organization and system-related barriers” is associated with Axioms 1, 2 and 5 of the service-dominant logic. The second category “customer-oriented barriers” is associated with Axioms 2, 4 and 5. The third category of barriers “social environmental and economic barriers” is related to only Axiom 3. Results based on the motivators show that the first category “organization and system-related motivators” is associated with Axioms 2 and 4. The second category of “customer-oriented motivators” is associated with Axioms 1, 2, 3 and 5. The third category of motivators “social environmental and economic motivators” is related to Axioms 3 and 5.
Practical implications
These results provide insights to managers for eradicating barriers from the value co-creation process by emphasizing strategic intrusion into those axioms that contain a high percentage of barriers. Similarly, it also provides insights to managers for expediting motivators of value co-creation by strategic intrusion based on the axioms that contain a high percentage of motivators. Overall, this study will serve for greater value co-creation by eradicating barriers and promoting motivators. This study also provides a theoretical foundation for future studies intended to establish a theoretical connection between the barriers and motivators with value co-creation in other industries.
Originality/value
This study is novel in terms of identifying barriers and motivators of value creation by categorizing those identified barriers and motivators into three sub-categories. This study is the first one for linking barriers and motivators with five axioms of value creation for a micro-level policy formulation.
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Ohoud AlMunthiri, Shaker Bani Melhem, Faridahwati Mohd Shamsudin and Shaikha Ali Al-Naqbi
Although the development of public organisations and the continual enhancement of public services depend on the creative behaviour of public employees, it is uncertain from…
Abstract
Purpose
Although the development of public organisations and the continual enhancement of public services depend on the creative behaviour of public employees, it is uncertain from earlier studies how and when inclusive leadership (IL) affects innovative behaviours (IB). This study aims to resolve the inconsistency in the literature by applying social exchange theory to examine the effect of inclusive leadership on employees’ innovative behaviour, while also examining the mediating role of work engagement and the moderating effect of psychological safety within this relationship.
Design/methodology/approach
The research model’s analysis draws from a data set of 200 employee–supervisor dyads. Data was collected from employees across diverse public sector organisations in the United Arab Emirates (UAE).
Findings
The results demonstrate that IL indirectly (via WE) and directly has a positive influence on employees’ IBs. This influence is enhanced when employees feel safe and do not have to be concerned about negative consequences.
Originality/value
Our study highlights a less-explored sector, unveiling the motivations behind IB among public sector employees. Moreover, this study provides valuable insights within a non-Western context, offering a unique perspective on the intricate relationship between IL, PS, employee engagement and IBs in the UAE public sector.
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Abstract
Purpose
This study aimed to explore the spatial accessibility dynamics of urban parks and their driving forces from 1901 to 2010 in terms of the dynamic relationships between spatial morphology and road networks, taking Nanjing City as an example.
Design/methodology/approach
This study mapped and examined the spatiotemporal distribution of urban parks and road networks in four time points at Nanjing: the 1910s, 1930s, 1960s and 2010s, using the analysis methodology of spatial design network analysis, kernel density estimation and buffer analysis. Two approaches of spatial overlaying and data analysis were adopted to investigate the accessibility dynamics. The spatial overlaying compared the parks' layout and the road networks' core, subcore and noncore accessible areas; the data analysis clarified the average data on the city-wide and local scales of the road networks within the park buffer zone.
Findings
The analysis of the changing relationships between urban parks and the spatial morphology of road networks showed that the accessibility of urban parks has generally improved. This was influenced by six main factors: planning implementation, political policies, natural resources, historical heritage and cultural and economic levels.
Social implications
The results provide a reference for achieving spatial equity, improving urban park accessibility and supporting sustainable urban park planning.
Originality/value
An increasing number of studies have explored the spatial accessibility of urban parks through the relationships between their spatial distribution and road networks. However, few studies have investigated the dynamic changes in accessibility over time. Discussing parks' accessibility over relatively long-time scales has practical, innovative and theoretical values; because it can reveal correlational laws and internal influences not apparent in short term and provide reference and implications for parks' spatial equity.
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Neveen Barakat, Liana Hajeir, Sarah Alattal, Zain Hussein and Mahmoud Awad
The objective of this paper is to develop a condition-based maintenance (CBM) scheme for pneumatic cylinders. The CBM scheme will detect two common types of air leaking failure…
Abstract
Purpose
The objective of this paper is to develop a condition-based maintenance (CBM) scheme for pneumatic cylinders. The CBM scheme will detect two common types of air leaking failure modes and identify the leaky/faulty cylinder. The successful implementation of the proposed scheme will reduce energy consumption, scrap and rework, and time to repair.
Design/methodology/approach
Effective implementation of maintenance is important to reduce operation cost, improve productivity and enhance quality performance at the same time. Condition-based monitoring is an effective maintenance scheme where maintenance is triggered based on the condition of the equipment monitored either real time or at certain intervals. Pneumatic air systems are commonly used in many industries for packaging, sorting and powering air tools among others. A common failure mode of pneumatic cylinders is air leaks which is difficult to detect for complex systems with many connections. The proposed method consists of monitoring the stroke speed profile of the piston inside the pneumatic cylinder using hall effect sensors. Statistical features are extracted from the speed profiles and used to develop a fault detection machine learning model. The proposed method is demonstrated using a real-life case of tea packaging machines.
Findings
Based on the limited data collected, the ensemble machine learning algorithm resulted in 88.4% accuracy. The algorithm can detect failures as soon as they occur based on majority vote rule of three machine learning models.
Practical implications
Early air leak detection will improve quality of packaged tea bags and provide annual savings due to time to repair and energy waste reduction. The average annual estimated savings due to the implementation of the new CBM method is $229,200 with a payback period of less than two years.
Originality/value
To the best of the authors’ knowledge, this paper is the first in terms of proposing a CBM for pneumatic systems air leaks using piston speed. Majority, if not all, current detection methods rely on expensive equipment such as infrared or ultrasonic sensors. This paper also contributes to the research gap of economic justification of using CBM.
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