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1 – 10 of over 19000Ryspek Usubamatov and K.W. Leong
The purpose of this paper is to investigate theoretically the process of jamming in the peg‐hole type parts and to derive a mathematical model of jamming.
Abstract
Purpose
The purpose of this paper is to investigate theoretically the process of jamming in the peg‐hole type parts and to derive a mathematical model of jamming.
Design/methodology/approach
The mathematical model of the jamming of the peg‐hole type parts in assembly process was performed and its boundary conditions, which lead to jamming, defined.
Findings
The equation of the critical angles of declination for the peg, which leads to the peg‐hole jam, was derived. The boundary condition of the angles of declination and the depth of the peg insertion into the hole were defined.
Research limitations/implications
A mathematical model is developed for rigid parts with a hole and for the peg clamped in the rigid assembly mechanisms. The research has not considered flexible deformations and stiffness of the assembly mechanisms, which result in the peg's declination in the assembly process.
Practical implications
The results are represented in the form of the peg's critical angles of declination and critical depth of insertion into the hole, which leads to jamming of the peg‐hole type parts to be assembled. On the basis of the obtained results, it is possible to formulate the tolerances of the declination angles for the assembly mechanisms, which clamp the peg‐type parts.
Originality/value
The proposed method calculating the critical angles of the peg's declination and critical depth of the peg's insertion into the hole for assembly of the peg‐hole type parts, enables one to increase the reliability of the assembly process in the manufacturing industry.
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Ren Lu and Torger Reve
Understanding China's economic success requires insights into its peculiar guanxi‐based market. Many scholars are confused about how to apply Western network theories to the guanxi…
Abstract
Purpose
Understanding China's economic success requires insights into its peculiar guanxi‐based market. Many scholars are confused about how to apply Western network theories to the guanxi‐based Chinese market. This paper aims to contribute to this comprehensive topic by theoretically exploring the differences among three fundamental network concepts: guanxi; structural hole; and closure.
Design/methodology/approach
Following Heide, the present paper categorises networks into three dimensions: network initiation, network maintenance and network termination, each based on different time phases. The three fundamental network concepts in every dimension are compared, laying out their similarities and dissimilarities in detail.
Findings
Although each of the three networks are initiated either naturally or artificially, guanxi is closely embedded in Chinese institutions. Unlike structural hole and closure, which can be applied at any level, guanxi is a special relation that only exists at the individual level. Structural hole and closure highlight the structures of the networks that bring them various benefits and constraints. Such merits are not evident in guanxi, in which favour exchange plays a crucial role in connecting entities. In addition, guanxi has special rules that affect the strength of ties.
Originality/value
The purpose of this paper is to articulate the differences among guanxi, structural hole and closure. The systematic framework provides a platform to scholars interested in applying the Western network theory to guanxi‐based markets. The study work also provides new insights to non‐Chinese actors doing business in China.
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First, the paper aims to explore the ability of the actor sitting on the structural hole to achieve the additional rent, which is modeled as the outcome of joint effect between…
Abstract
Purpose
First, the paper aims to explore the ability of the actor sitting on the structural hole to achieve the additional rent, which is modeled as the outcome of joint effect between the relational performances of two dyads (supplier–buyer and buyer–customer) within the triadic supply chains. Second, the paper seeks to empirically compare the value of additional rent among different structural hole states of triadic supply chains.
Design/methodology/approach
Building upon the theoretical tenets of social capital theory, complemented by the underpinnings of relational view, this research uses survey data gathered from the triadic supply chains in Europe. To conduct necessary processing, the multivariate statistical analyses have been performed.
Findings
The findings suggest that the rent is actually yielded by the actors bridging the structural hole in the triadic supply chain; however, its value, as evidenced in the study, is diverse regarding the specific structural hole state. More specifically, the highest value of rent is generated by the buyer establishing cooperative posture of both dyads in the triadic supply chains. The value of rent close to zero is revealed in the triadic supply chains with negative relational posture of both dyads. Interestingly, the lowest level of rent produced by the buyer from bridging the structural hole is reported with the triadic supply chains in which one dyad demonstrates a more cooperative relational posture, whereas the other one indicates an adversarial relational posture. Not only does this result suggest that there is no rent, but it even goes further to indicate a negative return (or loss) derived by the manufacturer in this group of triadic supply chains.
Research limitations/implications
The study is limited to the relational posture, either strong or weak; therefore, it would be worthwhile to examine a wider spectrum of behaviors, based on the adversarial relationships, deprived of mutual trust, when both actors in a dyad act opportunistically and antagonistically. Moreover, regarding the research method used, the case study is usually deemed to be more appropriate to deeply grasp the complex issues of social behavior. Finally, caution should also be exercised while generalizing the results obtained from the research.
Practical implications
For practicing supply chain managers, this study points that that it is likely that both actors collaborating with the buyer (the supplier and the customer) also enjoy additional benefits offered by the rent. Importantly for managers, regardless of the effort made by the focal actor, the careless attitude and independence of suppliers and customers may make it hard or even impossible for the buyer to establish triads that include relationships of high quality.
Social implications
In terms of social implications, this study brings to the fore that not only are the buyers driven by self-interest but they may be also guided by ethical and social rules when interacting with suppliers and customers in their triads. This research evidenced that the buyer in the triadic supply chain can act as the moderator that tends to simultaneously establish a strong relational posture to two other actors in such a way that the joint effect of relational performance generated by both dyads significantly contributes to the higher level of buyer’s individual performance.
Originality/value
The study investigates whether and how establishing relational posture of two dyads in the triadic supply chains can affect the additional rent for the buyer derived from bridging the structural hole.
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Minrui Han, Bing Sun and Xiao Su
This study aims to explore the influence of a region’s network location characteristics and indirect connections on its innovation capability. The aim is to assist regions in…
Abstract
Purpose
This study aims to explore the influence of a region’s network location characteristics and indirect connections on its innovation capability. The aim is to assist regions in different network locations to use innovation resources to improve their innovation capabilities more efficiently.
Design/methodology/approach
This paper represents the Chinese regional innovation network using the gravity model. A theoretical framework is developed to explore the relationships between a region’s innovation capability and its network location. Hypotheses are tested using hierarchical regressions.
Findings
First, this paper finds that a region’s network centrality can promote its innovation capability. Second, a structural hole can positively adjust the relationship between a region’s centrality and innovation capability. Third, a region’s indirect connections can inhibit its innovation capability while exhibiting a U-shaped relationship in moderating centrality and innovation capability.
Originality/value
This study uses a multi-index system to construct an innovation network covering 29 regions in China. This network represents the innovation cooperation and overall situation of innovation in China. The paper is one of the first attempts at investigating the relationship between regional network locations and innovation capability. It is also the first attempt at testing the influence of indirect connections on a region’s innovation capability. The findings provide a new perspective on the factors influencing regional innovation capacity and a new way for regions to improve their innovation capability.
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J.J. Davignon and F. Gray
The tenting of via holes has been a controversial issue in the military arena for several years. This issue has gained importance with MIL‐STD‐2000's requirement that all…
Abstract
The tenting of via holes has been a controversial issue in the military arena for several years. This issue has gained importance with MIL‐STD‐2000's requirement that all circuitry and vias under components be coated to preclude entrapment of flux. This paper addresses this issue by evaluating the MIL‐Spec thermal shock reliability of solder mask as a hole fill material and as a via tent cover. The relationship of via hole to pad size on tent reliability and solder mask thickness is also investigated. This paper concludes that solder mask as a hole fill material will not pass military thermal shock requirements and that standard dry film solder mask is very sensitive to via hole and pad dimensions. The thinner and more flexible high conformance solder mask is the only material capable of passing MIL‐Spec thermal shock requirements for all via hole to pad relationships.
Feiyang Guan, Tienan Wang and Linbing Sun
This paper aims to examine how the firm’s global coopetition network position impacts market share and to explore the multiple moderating effects of trade network strength and…
Abstract
Purpose
This paper aims to examine how the firm’s global coopetition network position impacts market share and to explore the multiple moderating effects of trade network strength and structures on the relationship between firm global coopetition network position and market share.
Design/methodology/approach
This paper selects global automobile manufacturing firms as samples whose classification is “Automobile” in the Factiva database from 2014 to 2018 and develops the measurement for global coopetition network and trade network by using Ucinet6. Finally, Stata was used for data analysis.
Findings
This paper finds that structural holes and centrality are beneficial to improve global market share. And the trade network strength and structures have positive multiple moderating effects on the relationship between the firm global coopetition network position and market share.
Originality/value
This paper explores industrial international competitiveness according to the intricate trade relations among countries and the impact of industrial international competitiveness on the relationship between global coopetition network position of brand firms and market share. The results of this paper expand the current literature on the relationship between characteristics of coopetition network and trade network.
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Di Yang, Weiwei Qu and Yinglin Ke
The riveting process is a metal forming process involving complex elastic-plastic deformation, which will induce a compressive residual stress field and cause local distortions in…
Abstract
Purpose
The riveting process is a metal forming process involving complex elastic-plastic deformation, which will induce a compressive residual stress field and cause local distortions in the connecting areas. Regarding to the aircraft panel assemblies with plenty of rivets, the global deformation is inevitable and undesired, leading difficulties to downstream assembly processes. This paper aims to present a new method for the local distortion calculation and the global deformation prediction of sheet panel assemblies during the automated riveting process.
Design/methodology/approach
In this paper, a simplified algebraic study is presented to analyze the local distortion of single countersunk rivet joint with the consideration of the barrel-like shape of the driven head and the through-thickness variations along the rivet shank. Then, an equivalent rivet unit is proposed based on the result of the algebraic study and embedded into the global-level model for the prediction of the overall distortions of riveted panels.
Findings
The algebraic study is able to reach a more precise contour of the deformed rivet than the traditional assumption of cylindrical deformations and rapidly determine the equivalent coefficients of the riveting unit. The result also shows an industrial acceptable accuracy of the prediction for the global deformations of the double-layered panel assemblies widely used in the aircraft panel structures.
Originality/value
A new local-global method for predicting the deformations of the riveted panel assembly based on the algebraic study of the local distortions is proposed to help the engineers in the early design stages or in the assembly process planning stage.
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This study examines the relationships between structural holes, guanxi and knowledge sharing among groups of stakeholders within a Chinese destination network.
Abstract
Purpose
This study examines the relationships between structural holes, guanxi and knowledge sharing among groups of stakeholders within a Chinese destination network.
Design/methodology/approach
This study conducted surveys, social network analysis and semi-structured interviews to gather data from the stakeholders of a popular Chinese tourist destination to test its hypotheses.
Findings
Knowledge sharing within the destination network was impeded by structural holes but facilitated by guanxi. Furthermore, the impeding effect of structural holes on knowledge sharing is alleviated by guanxi.
Originality/value
This study illustrates the ways that stakeholders exploit structural holes and guanxi to promote knowledge sharing, and thus offers novel insights into how destination network structures affect the efficacy of stakeholders when it comes to sharing knowledge and promoting their destination.
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Junxia Jiang, Chen Bian and Yinglin Ke
The purpose of this paper is to design a new method to realize automatic assembly of aircraft components with large shafts such as canard and vertical tail. The assembly structure…
Abstract
Purpose
The purpose of this paper is to design a new method to realize automatic assembly of aircraft components with large shafts such as canard and vertical tail. The assembly structure of component with large shaft and fuselage is a mating assembly structure, and it is a challenge to satisfy the precision and assembly requirement.
Design/methodology/approach
According to the assembly structure features and process requirements of an aircraft component with large shaft, the operating principle of precise assembly system for shaft-hole mating is analyzed in this paper. The model of compliant assembly for shaft-hole mating is constructed, and force condition analysis of the compliant assembly is performed. An automatic precise shaft-hole assembly method for aircraft assembly using 5 degrees of freedom spatial mechanism, compliance technology and servo feeding system is put forward based on the analysis. A 5 degrees of freedom passive compliant experimental equipment has been developed.
Findings
Application test results of the 5 degrees of freedom passive compliant experimental equipment show that the simulated canard can be mated automatically and accurately through this method with high efficiency and high quality as long as the tip of shaft enters into the range of hole’s chamfer.
Practical implications
This method has been used in an aircraft assembly project. The practical results show that the aircraft components with large shafts can be mated automatically and accurately through this method with high efficiency and high quality.
Originality/value
This paper presents a new method and designs a new assembly system to realize the assembly of the aircraft components with large shafts. The research will promote the automation of fuselage assembly.
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Yi Liu, Ting Liu, Yuan Li and Liyang Ruan
Previous studies have investigated the influence strategy–economic satisfaction links within a pairwise framework. This study aims to reexamine this issue in a network context…
Abstract
Purpose
Previous studies have investigated the influence strategy–economic satisfaction links within a pairwise framework. This study aims to reexamine this issue in a network context from both the structural and relational embeddedness perspectives.
Design/methodology/approach
An ego network approach in which the network consists of a focal distributor, other distributors and alternate manufacturers is adopted to measure the distributor’s network. Drawing on data from 124 distributors from China’s tire industry, a hierarchical multiple regression analysis is used to test the hypotheses.
Findings
The empirical results find a positive relationship between a manufacturer’s noncoercive influence strategies and the distributor’s economic satisfaction and an inverse U-shaped relationship between coercive influence strategies and economic satisfaction. It discusses the joint effects of coercive and noncoercive influence strategies and finds that the former mitigate the positive effects of the latter and that the latter flatten the inverse-U shaped effect of the former. Further, when a distributor spans rich structural holes, the effects of coercive and noncoercive influence strategies on economic satisfaction weaken. When a distributor has strong ties with its network members, the effects of noncoercive influence strategies are mitigated, while the effects of coercive influence strategies are enhanced.
Practical implications
This study provides implications for manufacturers, particularly concerning how to properly exert influence strategies to improve distributors’ economic satisfaction. Manufacturers should consider the attributes of the networks in which the distributors are embedded, involving structural holes and tie strength. They should also carefully use the two influence strategies simultaneously.
Originality/value
This study contributes to the influence strategy literature by incorporating a network perspective by empirically examining the different moderating effects of structural holes and tie strength; provides a new and powerful explanation for the effects that coercive influence strategies have on economic satisfaction by testing an inverse U-shaped effect; and examines the effects of the interaction of two strategies.
Details