Fei Hu, Yanping Song, Yundou Xu and Huaizhou Wen
This paper aims to synthesize a modular deployable truss antenna with the lower degree of freedom (DOF) and larger folding ratio. Because of the advantages of this kind of new…
Abstract
Purpose
This paper aims to synthesize a modular deployable truss antenna with the lower degree of freedom (DOF) and larger folding ratio. Because of the advantages of this kind of new truss antenna, the modules that make up the antenna can be deployed together by the synchronous motor drivers instead of twist springs to realize the controllable deployment.
Design/methodology/approach
The closed-loop branch equivalence method is proposed to synthesize the single DOF module and the large deployable reflector. The complex mechanism can be equivalently replaced by a simpler mechanism based on screw theory. The motion pairs are synthesized and optimized to make the curved surface achieve to the maximum folding ratio when the modular parabolic truss antenna is folded.
Findings
The results show that the 3(3RR-3RRR)-3RRR-3RRR planar module is a single DOF mechanism. Additionally, the adjacent parts of every two modules are connected with universal joints to obtain the new truss antenna when the modules are networked.
Practical implications
The configuration of this new modular deployable truss antenna can be synthesized to design the structure, and the proposed method can be applied to other space multi-loop coupling mechanism and other spacecraft.
Originality/value
This paper presents an approach to synthesizing the motion pairs, as well as the DOF analysis. The results lay a foundation for the further analysis of the deployable control and dynamics of this kind of antenna. And the new modular truss antenna has a practical application in aerospace engineering.
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Yanping Liu, Bo Yan and Xiaoxu Chen
This paper studies the optimal decision-making and coordination problem of a dual-channel fresh agricultural product (FAP) supply chain. The purpose is to analyze the impact of…
Abstract
Purpose
This paper studies the optimal decision-making and coordination problem of a dual-channel fresh agricultural product (FAP) supply chain. The purpose is to analyze the impact of information sharing on optimal decisions and propose a coordination mechanism to encourage supply chain members to share information.
Design/methodology/approach
The two-echelon dual-channel FAP supply chain includes a manufacturer and a retailer. By using the Stackelberg game theory and the backward induction method, the optimal decisions are obtained under information symmetry and asymmetry and the coordination contract is designed.
Findings
The results show that supply chain members should comprehensively evaluate the specific situation of product attributes, coefficient of freshness-keeping cost and network operating costs to make decisions. Asymmetric information can exacerbate the deviation of optimal decisions among supply chain members and information sharing is always beneficial to manufacturers but not to retailers. The improved revenue-sharing and cost-sharing contract is an effective coordination mechanism.
Practical implications
The conclusions can provide theoretical guidance for supply chain managers to deal with information asymmetry and improve the competitiveness of the supply chain.
Originality/value
This paper combines the three characteristics that are most closely related to the reality of supply chains, including horizontal and vertical competition of different channels, the perishable characteristics of FAPs and the uncertainty generated by asymmetric demand information.
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Bo Yan, Xiaoxu Chen, Yanping Liu and Chang Xia
The cluster supply chain is widely used in the professional towns in China, and improves the competitiveness of small and medium enterprises through integrating the supply chain…
Abstract
Purpose
The cluster supply chain is widely used in the professional towns in China, and improves the competitiveness of small and medium enterprises through integrating the supply chain with the industrial cluster. The paper aims to discuss this issue.
Design/methodology/approach
This paper studies a cluster supply chain under vendor managed inventory (VMI) system, which includes vendors, third-party logistics (TPL) enterprises and retail enterprises, and aims to study the replenishment decisions and coordination contracts in the supply chain. The economic order quantity model is applied to analyze the influence of marginal transportation cost factor under two replenishment modes – direct delivery and milk-run delivery, in order to find out the optimal replenishment decisions corresponding to different marginal transportation cost factors. And then, the revenue sharing contract is used to identify the change of profits of enterprises in the supply chain before and after the coordination contract.
Findings
It is concluded that the marginal transportation cost factor is an important factor influencing the replenishment decision especially in milk-run delivery, and the introduction of the revenue sharing contract can improve the revenue in the supply chain.
Originality/value
This is the first study that explores the relationship between a single transport cost and a single transport batch of cluster supply chain in centralized VMI & TPL system. The conclusions of the study have certain theoretical significance for the decision making and coordination of cluster supply chain.
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Dongya Zhang, Yanping Gao, Pengju Wu, Yanchao Zhang and Liping Wang
This paper aims to enhance lubrication performance of the pitcher plant–like textured surface with various parameters.
Abstract
Purpose
This paper aims to enhance lubrication performance of the pitcher plant–like textured surface with various parameters.
Design/methodology/approach
A pitcher plant–like structure surface is fabricated on the copper alloy, and the lubrication performance of the pitcher plant–like structure with various parameters is evaluated. In addition, the pressure distribution and oil film load capacity of the pitcher plant–like surface are simulated based on Navier–Stokes equations.
Findings
When the direction of motion aligns with the pitcher plant–like structure, the friction coefficient remains lower than that of the nontextured surface, and it exhibits a decreasing trend with the increasing of the texture width and spacing distance; the lowest friction coefficient (0.04) is achieved with B = 0.3 mm, L = 1.0 mm and θ = 45°, marking a 75% reduction compared to the nontextured surface. Simulation results demonstrate that with the increase in texture width and spacing distance, the oil film load-bearing capacity demonstrates an increasing trend.
Originality/value
Bionic pitcher plants are prepared on the copper alloy to improve the lubrication performance and wear resistance.
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-04-2024-0119/
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Yanping Guo, Bingqing Xiong, Yongqiang Sun, Eric Tze Kuan Lim and Chee-Wee Tan
Peer-to-Peer Accommodation Service (P2PAS) has emerged as a novel paradigm that enables consumers to book temporary accommodation through P2PAS platforms (online transaction), and…
Abstract
Purpose
Peer-to-Peer Accommodation Service (P2PAS) has emerged as a novel paradigm that enables consumers to book temporary accommodation through P2PAS platforms (online transaction), and then reside in hosts' rooms (offline consumption). Due to potential variance in performance and conflict of interest between hosts and platforms, consumers may differ in their trust perceptions of the two parties, which in turn affects consumers' continuous usage of P2PAS. To this end, the authors endeavor to unravel the effect of consumers' trust incongruence on continuance intention, and to further elucidate the moderating influence of transaction and consumption risks on this relationship. This paper aims to discuss the aforementioned objectives.
Design/methodology/approach
This study collected data through an online survey of 408 P2PAS consumers. Polynomial modeling and response surface analysis were conducted to validate the hypothesized relationships.
Findings
Response surface analysis reveals that trust incongruence did not significantly affect consumers' continuance intention. However, continuance intention would be greater when TP was higher than TH compared with when TH was higher than TP. Furthermore, the analytical results suggest that trust incongruence exerts greater negative effect on continuance intention when transaction and consumption risks were high.
Originality/value
First, the study marks a paradigm shift in conceptualizing the incongruence between TP and TH as a determinant of consumers' continuance intention toward P2PAS. Second, the authors derive a typology of risks that is contextualized to P2PAS. Finally, the authors establish transaction and consumption risks as boundary conditions influencing the effects of trust incongruence on consumers' continuance intention toward P2PAS.
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Zonghua Liu, Yulang Guo, Junyun Liao, Yanping Li and Xu Wang
Despite past studies revealed the positive effect of corporate social responsibility (CSR) on consumer advocacy behavior, little research has paid attention to employee advocacy…
Abstract
Purpose
Despite past studies revealed the positive effect of corporate social responsibility (CSR) on consumer advocacy behavior, little research has paid attention to employee advocacy behavior. This research aims to examine the relationship between CSR and employee advocacy behavior, the mediating role of meaningful work as well as the moderating effect of person–supervisor fit on CSR perception – meaningful work relationship.
Design/methodology/approach
This study used 263 employee samples to examine the relationship between CSR and employee advocacy behavior and its influence mechanism. Hierarchical regression analyses and bootstrap approach were applied to analyze the data.
Findings
The results show that CSR perception is positively related to employee advocacy behavior, meaningful work mediates the link between CSR perception and employee advocacy behavior, and the strength of the relationship between CSR perception and meaningful work depends on person–supervisor fit.
Research limitations
This study only investigated the effect of perceived CSR on employee advocacy behavior, future studies should explore the alternative mediation mechanism through which external/internal CSR perception or different CSR dimensions influence employee advocacy behavior.
Practical implications
This study has practical implications for organizational managers. First, firms should undertake CSR practices and make employee interpret them in a right way. Second, meaningful work is of significance for employees and training and development, challenging jobs and job rotation are conducive to create a sense of meaning in employees’ work.
Originality/value
This study discussed how and when CSR influences employee advocacy in the Chinese context.
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Zhuo Chen, Yanping Gong and Julan Xie
The ubiquity of mobile phone use has generated a common phenomenon called phubbing, a reference to snubbing someone in social settings and instead concentrating on one's phone…
Abstract
Purpose
The ubiquity of mobile phone use has generated a common phenomenon called phubbing, a reference to snubbing someone in social settings and instead concentrating on one's phone. Despite numerous adverse effects of phubbing argued in previous research, the group of phubbers is growing intensively. The purpose of this study is to investigate the potential transmission of phubbing between marital partners to raise public awareness of the propagation of phubbing.
Design/methodology/approach
A two-wave study with a 3-month interval was conducted, using matched husband–wife data from 253 Chinese couples. Husbands and wives separately completed questionnaires about their spouses’ phubbing and their marital quality. The dyadic data analysis method was applied to test the research hypotheses.
Findings
The results confirm the transmission of phubbing and show a pronounced gender asymmetry in the process of phubbing transmission. Phubbing could be transmitted from wives to husbands, but not vice versa. Specifically, only wives' phubbing significantly undermine relationship quality, while relationship quality was negatively related to both husbands' phubbing and wives' phubbing.
Originality/value
This study contributes to a better understanding of the mechanism of phubbing transmission and provide support for reciprocity theory and social role theory. Results can cause public attention to the transmissibility of phubbing and provide enlightenment on the management of personal phone behavior and offer insight into research on technology use in other types of interpersonal relationships.
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Mengxi Yang, Wansi Chen, Qingyu Zhou, Baiyin Yang and Cheng Xu
China after 1949, especially since entering the 21st century, significant progress has been made in leadership research under Chinese context. However, so far there has been no…
Abstract
Purpose
China after 1949, especially since entering the 21st century, significant progress has been made in leadership research under Chinese context. However, so far there has been no systematic review and prospect of China's leadership research in the past 70 years. Therefore, with the help of scientific visualization software Citespace, this paper analyzes the research papers on leadership in the context of China from the top international journals of management science and applied psychology (1949–2018), supplemented and verified the previous research conclusions based on qualitative review, and quantitatively demonstrated the research evolution of leadership field.
Design Methodology Approach
Using a scientific visualization tool CiteSpace and 145 international leadership works, which were published in 64 top international journals and collected from the Web of Science database, and 852 domestic works which were published in 28 top domestic journals and collected from the CNKI database from 1949 to 2018, we draws keyword co-occurrence knowledge graph and keyword strategy map to visualize the landscape and evolution of leadership research and analyze the hot topics and research trends in the field of leadership.
Findings
The research found that: (1) Before 2002, there were only 7 articles published in 64 international top journal, mainly focusing on Western leadership theories such as transformational, cross-cultural comparison and the adaptability in Chinese context; (2) From 2003 to 2012, scholars had begun to introduce mainstream quantitative research paradigm in international academic community; (3) From 2013 to 2018, researches tended to be synchronized, with 461 and 99 papers published respectively. How emerging leaderships (such as ethical leadership) affect on various emerging outcome variables (such as creativity, voice behavior, unethical pro-organizational behavior etc.) is hot topic for future research.
Originality Value
Different from the previous qualitative reviews on organizational culture research, this paper, for the first time, uses bibliometric research methods to systematically analyze the evolution path of leadership research during the 70 years of China(1949–2018, and puts forward the future research prospects.
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The purpose of this study is to assess the impact of land rights and tenure types on farmers' investment behavior in Chinese collective forests, using household survey data from…
Abstract
Purpose
The purpose of this study is to assess the impact of land rights and tenure types on farmers' investment behavior in Chinese collective forests, using household survey data from Fujian Province.
Design/methodology/approach
In this study, the authors conducted a household survey in Fujian province of 520 randomly selected forest farmers. The authors used a random‐effects Tobit model to estimate the impact of land rights and other components on, for example, tenure security and harvest quota, and the impact of tenure types on farmers' investment incentives.
Findings
This study produced three main findings: perceived tenure security in the context of frequent agricultural land redistribution negatively affects input intensity; farmers still perceive some tenure arrangements to be more uncertain than others, which discourages them from undertaking investments on such plots; and the harvest quota regulation, introduced to conserve forest stock, has in fact acted as a disincentive in forestry management.
Originality/value
Almost all previous studies are based on national or regional data, which have primarily focused on the links between tenure types and investment incentives. In this study, based on the plot‐level data, the authors are able to assess not only the impacts of tenure types but also how specific land rights and their components affect farmers' investment behavior.
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Kishor Purushottam Jadhav, Amita Mahor, Anirban Bhowmick and Anveshkumar N.
Non-orthogonal multiple access (NOMA) is a much hopeful scheme, which is deployed to enhance the spectral efficiency (SE) significantly, and it also enhances the massive access…
Abstract
Purpose
Non-orthogonal multiple access (NOMA) is a much hopeful scheme, which is deployed to enhance the spectral efficiency (SE) significantly, and it also enhances the massive access that has attained substantial concern from industrial and academic domains. However, the deployment of superposition coding (SC) at the receiver side resulted in interference. For reducing this interference, “multi-antenna NOMA” seems to be an emerging solution. Particularly, by using the channel state information at the transmitter, spatial beam forming could be deployed that eliminates the interference in an effective manner.
Design/methodology/approach
This survey analyzes the literature review and diverse techniques regarding the NOMA-based spatial modulation (SM) environment. It reviews a bunch of research papers and states a significant analysis. Initially, the analysis depicts various transmit antenna selection techniques that are contributed in different papers. This survey offers a comprehensive study regarding the chronological review and performance achievements in each contribution. The analytical review also concerns on the amplitude phase modulation (APM) selection schemes adopted in several contributions. Moreover, the objective functions adopted in the reviewed works are also analyzed. Finally, the survey extends with various research issues and its gaps that can be useful for the researchers to promote improved future works on NOMA-based SM.
Findings
This paper contributes to a review related to NOMA-based SM systems. Various techniques and performance measures adopted in each paper are analyzed and described in this survey. More particularly, the selection of transmission antenna and APM are also examined in this review work. Moreover, the defined objective function of each paper is also observed and made a chronological review as well. Finally, the research challenges along with the gaps on NOMA-based SM systems are also elaborated.
Originality/value
This paper presents a brief analysis of NOMA-based SM systems. To the best of the authors’ knowledge, this is the first work that uses NOMA-based SM systems to enhance SE.