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Article
Publication date: 8 May 2019

Wenwu Han, Qianwang Deng, Wenhui Lin, Xuran Gong and Sun Ding

This study aims to present a model and analysis of automotive body outer cover panels (OCPs) assembly systems to predict assembly variation. In the automotive industry…

Abstract

Purpose

This study aims to present a model and analysis of automotive body outer cover panels (OCPs) assembly systems to predict assembly variation. In the automotive industry, the OCPs assembly process directly influences the quality of the automobile body appearance. However, suitable models to describe variation propagation of OCPs assembly systems remain unknown.

Design/methodology/approach

An adaptive state space model for OCPs assembly systems is introduced to accurately express variation propagation, including variation accumulation and transition, where two compliant deviations make impacts on key product characteristics (KPCs) of OCP, and the impacts are accumulated from welding process to threaded connection process. Another new source of variation from threaded connection is included in this model. To quantify the influence of variation from threaded connection on variation propagation, the threaded connection sensitivity matrix is introduced to build up a linear relationship between deviation from threaded connection and output deviation in KPCs. This matrix is solved by homogeneous coordinate transformation. The final deviation of KPCs will be transferred to ensure gaps and flushes between two OCPs, and the transition matrix is considered as a unit matrix to build up the transition relationship between different states.

Findings

A practical case on the left side body structure is described, where simulation result of variation propagation reveals the basic rule of variation propagation and the significant effect of variation from threaded connection on variation propagation of OCPs assembly system.

Originality/value

The model can be used to predict assembly variation or potential dimension problems at a preliminary assembly phase. The calculated results of assembly variation guide designers or technicians on tolerance allocation, fixture layout design and process planning.

Details

Assembly Automation, vol. 39 no. 2
Type: Research Article
ISSN: 0144-5154

Keywords

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Book part
Publication date: 14 December 2017

Panagiotis Theodorou

Several parameters set economic growth, and one of them is innovation. Thus, it is vital to realize the proper motives for a firm to innovate. The key actors in innovation…

Abstract

Several parameters set economic growth, and one of them is innovation. Thus, it is vital to realize the proper motives for a firm to innovate. The key actors in innovation systems – such as firms, research institutions, academia, and standards developing communities – affect knowledge ­creation, contribute to its diffusion and use, and set the global innovation capacity. Additionally, the market-driven and the worldwide open paradigm may aid to ensure stable and reliable integration, interactive abilities, and active collaborations to drive international innovation and its ­concepts forward. The World Trade Organization (WTO) is an international organization that assembles principles to produce such standards as mentioned above, so as to ensure a prosperous future globally. Global cooperation, openness, interaction, and the generation of motives for innovation are some of the principles that WTO embraces, and all of these are to benefit humanity from free market and trade growth, leading to triumph through innovation. Overall, this chapter examines the significant role of WTO in trade policy uncertainty and how innovation is ensured and stimulated by WTO regarding the specific case of the Chinese market.

Details

Global Opportunities for Entrepreneurial Growth: Coopetition and Knowledge Dynamics within and across Firms
Type: Book
ISBN: 978-1-78714-502-3

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Book part
Publication date: 30 October 2020

Vanessa Ratten

Accelerators provide a way for entrepreneurs to capitalize on new knowledge and technology regarding sport. The advantage of accelerators is that they can utilize the…

Abstract

Accelerators provide a way for entrepreneurs to capitalize on new knowledge and technology regarding sport. The advantage of accelerators is that they can utilize the wisdom of crowds in order to facilitate a quick introduction into the marketplace of new ideas. This is crucial in the competitive sport industry, which relies on utilizing knowledge intensive products and services for competitive reasons. Knowledge in a sport context can be hard to describe as it can refer to processes that enable better production processes. For this reason, it is useful to understand how knowledge is a source of power in the sport market and how it can be used strategically. This chapter focuses on issues such as knowledge management and knowledge hoarding as a way to gain a competitive advantage in the sport industry, thereby linking the research on accelerators to a knowledge perspective in the sport context.

Details

Sport Startups: New Advances in Entrepreneurship
Type: Book
ISBN: 978-1-78973-082-1

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Article
Publication date: 28 October 2014

Yuanhui Li and Check-Teck Foo

This paper aims to document and to illustrate highly usable research: a practical framework for realizing the sustainable operations of the high investment…

Abstract

Purpose

This paper aims to document and to illustrate highly usable research: a practical framework for realizing the sustainable operations of the high investment, technology-intensive high-speed railways in China. Also, for the first time, we draw a broad, metaphorical relationship between railways within a country to Chinese meridian lines within a human body. These are similar in enabling flows across the country and human body.

Design/methodology/approach

Employing Chinese case studies, we attempt to apply methodological procedures involving operational, financial and developmental in realizing the sustainability of high-speed railways. Critical criteria are emphasized for efficiency, financial viability and long-term funding sustained development of high-speed railways in the Chinese context. Policymakers may utilize the illustrative framework in working toward specific recommendations that may be implementable.

Findings

Three critical aspects to sustainability are operational, financial solvency and developmental. Our empirical investigations result in the working out of the procedural aspects as well. Based on this three-way classification, we design an evaluative framework for realizing sustainability of high-speed railways. Our insights are based on the social reality of China. Thus, we argue that cash handouts by government are necessary solutions, given the intensive capital investments required of high-speed railways for strongly positive externalities generated. On developmental aspects of sustainability, there should be rational, in-depth studies conducted so as to lead to rational choices of sites. Strong passenger flows coupled with affordability of fares are the twin guarantees of continuing, profitable performances.

Practical implications

This work on sustainability is globally, most highly significant for two reasons. First, railway is one fundamental mean of transportation within China. Thus, the sustainability of railway matters to a majority of the 1.3 billion people. Second, transport volume of China’s railway is the world’s largest. By developing such a comprehensive methodology, we hope to enhance how top management of Chinese Railways may keep the high-speed railways sustainable into the future.

Social implications

This paper is socially highly significant, especially in the context of what has happened in recent years in China’s railway industry, and may contribute by providing both the regulators and management with an objective methodology in future projects assessment within high-speed railway.

Originality/value

This paper develops an overall framework for enabling management to realize sustainability of high-speed railway within China. The ideas, concepts and methodologies are likely beneficial to top management, regulators and policymakers within the railway transportation, a state monopoly.

Details

Chinese Management Studies, vol. 8 no. 4
Type: Research Article
ISSN: 1750-614X

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Article
Publication date: 29 April 2021

Liang Ma, Xin Zhang and Gaoshan Wang

Enterprise social media (ESM) are frequently used in enterprises for daily operation. Although many researchers have attempted to understand the antecedents and…

Abstract

Purpose

Enterprise social media (ESM) are frequently used in enterprises for daily operation. Although many researchers have attempted to understand the antecedents and consequences of ESM use, the integrated model, boundary conditions and mechanism of the impact of ESM use on performance are still unclear. This study fill this research gap by adopting a grounded theory approach to study how ESM use affects employee performance.

Design/methodology/approach

Choosing representative cases, the authors collected interview data and analyzed the data using open coding, axial coding and selective coding.

Findings

The results showed four main categories including ESM use, work efficiency, emotional maintenance and work performance, as well as 14 sub-categories. This paper also constructs a model of the impact of ESM use on work performance. In addition, results showed that ESM use affects employees' work performance through work efficiency and emotional maintenance, and frequency of use and individual characteristics may moderate this process.

Originality/value

This study’s results contribute to the existing ESM literature by finding the integrated model, boundary conditions and mechanism of the impact of ESM use on performance. The authors also contributed to the social media literature by finding 14 sub-categories and four main categories including ESM use, work efficiency, emotional maintenance and work performance. The conclusion of this paper provides guidance and reference for the use and management of internal social media in enterprises.

Details

Journal of Enterprise Information Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1741-0398

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Article
Publication date: 1 September 2003

Yuan Wang

Employee participation enhances organizational effectiveness. Trust in employees leads to encouragement and acceptance of participation in decision making. There has been…

Abstract

Employee participation enhances organizational effectiveness. Trust in employees leads to encouragement and acceptance of participation in decision making. There has been recent and growing interest in understanding the basic characteristics of managerial mechanisms within township‐village enterprises (TVEs) in China and how these affect organizational performance. This empirical study investigates how trust influences managers’ decision‐making behavior in the township‐village enterprises in China. The findings of the study suggest that, although TVE managers develop a high level of trust in the dependability, predictability and good faith of their employees, only trust in employee dependability is positively related to participation in the decision‐making process.

Details

Journal of Managerial Psychology, vol. 18 no. 6
Type: Research Article
ISSN: 0268-3946

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Article
Publication date: 17 September 2019

Mouna Ben Rejeb Attia

The purpose of this paper is to examine borrowing capacity (BC) of government-owned firms and whether real earnings management (REM) activities moderate the sensitivity of…

Abstract

Purpose

The purpose of this paper is to examine borrowing capacity (BC) of government-owned firms and whether real earnings management (REM) activities moderate the sensitivity of firm BC to government ownership.

Design/methodology/approach

A simultaneous equation analysis is applied to study 210 Tunisian non-financial firms over the 2001–2014 period.

Findings

The empirical results provide substantial evidence indicating that government-owned firms have higher BC and significant REM than other firms; the relationship between government ownership and firm BC is partially moderated by REM activities.

Practical implications

The findings imply that the implicit credit guarantee of government is not necessarily the unique determinant of firm BC and highlight the role of lenders in monitoring discretionary real transactions in government-owned and protected firms. These implications should be taken in to account by public sector policy makers. In particular, the findings predict that the current government accounting reform in Tunisia on the basis of IPSAS will, probably, improve information quality, but it is still insufficient to control real activities in public institutions.

Originality/value

This study extends a growing research stream on the relationship between BC and government ownership by focusing on the moderating effect of REM on this relationship and by considering the endogeneity issue. The findings provide evidence that government-owned firms use REM practices to improve their BC. Examining these practices in developing countries provides an opportunity to evaluate the efficiency of their public sector reforms and their effect on a firm’s performance and financing decisions.

Details

International Journal of Public Sector Management, vol. 33 no. 2/3
Type: Research Article
ISSN: 0951-3558

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Article
Publication date: 3 April 2018

Zhizhong Kang, Shixing Ding, Zhi-ang Shuai and Baomin Sun

This paper aims to shows the ability of the EDC model with a global reaction mechanism to describe reactions in the Eulerian simulation of a circulating fluidized bed (CFB).

Abstract

Purpose

This paper aims to shows the ability of the EDC model with a global reaction mechanism to describe reactions in the Eulerian simulation of a circulating fluidized bed (CFB).

Design/methodology/approach

The eddy dissipation concept (EDC) model is embedded in an Eulerian-Eulerian approach to simulate homogeneous reactions.

Findings

EDC_G is better than ED_FR in describing chemical reactions. The reaction of CH4 with O2 is faster than that of CO with O2, and NH3 is more liable to be converted than HCN. The combustion rate is higher than the Boudouard reaction rate of coal particles.N2O is mainly reduced by carbon, and NO is mainly converted by carbon into N2 and CO2.

Originality/value

The EDC model with a global reaction mechanism is embedded in a multi-fluid Eulerian approach to simulate the homogeneous reactions in the coal combustion in a CFB, including combustion of volatile gases, desulfurizing reactions and NOx reactions.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 28 no. 4
Type: Research Article
ISSN: 0961-5539

Keywords

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Article
Publication date: 11 July 2019

Kai Zhao, Li-Guo Tan and Shen-Min Song

This paper aims to give the centralized and distributed fusion estimator for nonlinear multi-sensor networked systems with packet loss compensation and correlated noises…

Abstract

Purpose

This paper aims to give the centralized and distributed fusion estimator for nonlinear multi-sensor networked systems with packet loss compensation and correlated noises and give the corresponding square-root cubature Kalman filter.

Design/methodology/approach

Based on the Gaussian approximation recursive filter framework, the authors derive the centralized fusion filter and using the projection theorem, the authors derive the centralized fusion smoother. Then, based on the fast batch covariance intersection fusion algorithm, the authors give the corresponding results for distributed fusion estimators.

Findings

Designing the fusion estimators for nonlinear multi-sensor networked systems with packet loss compensation and correlated noises is necessary. It is useful for general nonlinear systems.

Originality/value

Throughout the whole study, the main highlights of this paper are as follows: packet loss compensation and correlated noises are considered in nonlinear multi-sensor networked systems. There are no relevant conclusions in the existing literature; centralized and distributed fusion estimators are derived based on the above system; for the posterior covariance with compensation factor and correlated noises, a new square-root factor of the error covariance is derived; and the new square-root factor of the error covariance is used to replace the numerical implementation of the covariance in cubature Kalman filter (CKF), which simplified the problem in calculating the posterior covariance in CKF.

Details

Sensor Review, vol. 39 no. 5
Type: Research Article
ISSN: 0260-2288

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Article
Publication date: 1 September 2002

Rong‐Lei Sun, Youlun Xiong, Runsheng Du and Han Ding

Multiple assembly sequences can increase the flexibility of assembly systems and consequently lead to better performance. The relationship between multiple assembly…

Abstract

Multiple assembly sequences can increase the flexibility of assembly systems and consequently lead to better performance. The relationship between multiple assembly sequences and their impact on the performance of assembly systems are studied. Based on the concept of operation flexibility, this paper presents a flexibility measure to evaluate each operation sequence. A flexibility‐based criterion is proposed to prioritize each operation, which is then used to guide the assembly scheduling. A simulation study demonstrates that when using the criterion, higher system flexibility is achieved and consequently better performance of the assembly systems is obtained.

Details

Assembly Automation, vol. 22 no. 3
Type: Research Article
ISSN: 0144-5154

Keywords

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