Search results

1 – 10 of over 5000
To view the access options for this content please click here
Book part
Publication date: 5 October 2018

Nima Gerami Seresht, Rodolfo Lourenzutti, Ahmad Salah and Aminah Robinson Fayek

Due to the increasing size and complexity of construction projects, construction engineering and management involves the coordination of many complex and dynamic processes…

Abstract

Due to the increasing size and complexity of construction projects, construction engineering and management involves the coordination of many complex and dynamic processes and relies on the analysis of uncertain, imprecise and incomplete information, including subjective and linguistically expressed information. Various modelling and computing techniques have been used by construction researchers and applied to practical construction problems in order to overcome these challenges, including fuzzy hybrid techniques. Fuzzy hybrid techniques combine the human-like reasoning capabilities of fuzzy logic with the capabilities of other techniques, such as optimization, machine learning, multi-criteria decision-making (MCDM) and simulation, to capitalise on their strengths and overcome their limitations. Based on a review of construction literature, this chapter identifies the most common types of fuzzy hybrid techniques applied to construction problems and reviews selected papers in each category of fuzzy hybrid technique to illustrate their capabilities for addressing construction challenges. Finally, this chapter discusses areas for future development of fuzzy hybrid techniques that will increase their capabilities for solving construction-related problems. The contributions of this chapter are threefold: (1) the limitations of some standard techniques for solving construction problems are discussed, as are the ways that fuzzy methods have been hybridized with these techniques in order to address their limitations; (2) a review of existing applications of fuzzy hybrid techniques in construction is provided in order to illustrate the capabilities of these techniques for solving a variety of construction problems and (3) potential improvements in each category of fuzzy hybrid technique in construction are provided, as areas for future research.

Details

Fuzzy Hybrid Computing in Construction Engineering and Management
Type: Book
ISBN: 978-1-78743-868-2

Keywords

To view the access options for this content please click here
Article
Publication date: 14 December 2018

Qian Yang, Yi Liu and Yuan Li

This paper aims to investigate how a Chinese firm’s strategic orientation impact its knowledge acquisition from its foreign alliance partners through governance mechanisms…

Abstract

Purpose

This paper aims to investigate how a Chinese firm’s strategic orientation impact its knowledge acquisition from its foreign alliance partners through governance mechanisms used in the Sino-foreign alliance partnership.

Design/methodology/approach

This research first proposes an integrated model which links a firm’s strategic orientations (entrepreneurial and market orientations), governance mechanism (contract and trust controls), and its knowledge acquisition together. Then, this research collected data from 198 Chinese firms involved in Sino-foreign alliances to test the conceptual model.

Findings

For entrepreneurial-oriented alliance firms, a moderate level of contract and a high level of trust are the most efficient uses of control mechanisms for Chinese firms’ knowledge acquisition. In comparison, for market-oriented alliance firms, both contract and trust control mechanisms should be used at the moderate level to achieve maximum knowledge acquisition from their foreign partners.

Originality/value

By introducing a new antecedent for the choice of control mechanisms in the context of Sino-foreign alliance relationships, this study empirically finds a non-linear relationship between contract control and knowledge acquisition and confirms the significant role of trust in facilitating knowledge acquisition between alliance partners from the perspective of alliance firms in emerging markets.

Details

Journal of Business & Industrial Marketing, vol. 34 no. 2
Type: Research Article
ISSN: 0885-8624

Keywords

To view the access options for this content please click here
Article
Publication date: 28 September 2020

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…

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

Journal of Business & Industrial Marketing, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0885-8624

Keywords

To view the access options for this content please click here
Article
Publication date: 8 May 2019

Yukan Hou, Yuan Li, Yuntian Ge, Jie Zhang and Shoushan Jiang

The purpose of this paper is to present an analytical method for throughput analysis of assembly systems with complex structures during transients.

Abstract

Purpose

The purpose of this paper is to present an analytical method for throughput analysis of assembly systems with complex structures during transients.

Design/methodology/approach

Among the existing studies on the performance evaluation of assembly systems, most focus on the system performance in steady state. Inspired by the transient analysis of serial production lines, the state transition matrix is derived considering the characteristics of merging structure in assembly systems. The system behavior during transients is described by an ergodic Markov chain, with the states being the occupancy of all buffers. The dynamic model for the throughput analysis is solved using the fixed-point theory.

Findings

This method can be used to predict and evaluate the throughput performance of assembly systems in both transient and steady state. By comparing the model calculation results with the simulation results, this method is proved to be accurate.

Originality/value

This proposed modeling method can depict the throughput performance of assembly systems in both transient and steady state, whereas most exiting methods can be used for only steady-state analysis. In addition, this method shows the potential for the analysis of complex structured assembly systems owing to the low computational complexity.

Details

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

Keywords

To view the access options for this content please click here
Book part
Publication date: 6 December 2017

Ningzi Li and Qi Song

The goal of this chapter is to respond to the theoretical inquiries by scholars who are interested in how the public–private partnership (PPP) models adapt to China’s…

Abstract

The goal of this chapter is to respond to the theoretical inquiries by scholars who are interested in how the public–private partnership (PPP) models adapt to China’s context where political power dictates economic strategies. We also want to provide suggestions to policy designers who aim to promote a sustainable investment environment for domestic and international investors. We review the literature that explains the upside and downside of PPP projects in contemporary China. (1) We classify the trajectory of PPP evolution into four phases, i.e., emergence, growth, recession and revival. (2) We note that private companies take a disadvantageous position in the partnership compared with governments and state-owned enterprises because of a lack of specialized legislation, unequal competition between private companies and state-owned enterprises and the opposition from the civic society. (3) We identify political risks as the most influential risks. Political risks also lead to the misallocation of other risks between public and private parties that contributes to the high failure rate of China’s PPP projects. Based on these findings, we recommend governments to draft specialized legislation, stabilize the political environment and provide favourable subsidies to local governments to limit the risks involved in PPP projects. We also advise private enterprises and state-owned enterprises to focus on negotiating over task and risk division with governments when they make decisions to participate in PPP projects. This full review of studies on PPP development in China provides reliable recommendations to scholars, governments and enterprises.

Details

The Emerald Handbook of Public–Private Partnerships in Developing and Emerging Economies
Type: Book
ISBN: 978-1-78714-494-1

Keywords

To view the access options for this content please click here
Article
Publication date: 14 December 2017

Bo Xin, Yuan Li, Jian-feng Yu and Jie Zhang

The purpose of this paper is to investigate the nonlinear dynamics of the aircraft assembly lines. An approach for modeling and analyzing the production rate of an…

Abstract

Purpose

The purpose of this paper is to investigate the nonlinear dynamics of the aircraft assembly lines. An approach for modeling and analyzing the production rate of an aircraft assembly line is introduced using the chaos theory.

Design/methodology/approach

First, two key system variables including reliability and learning ability are considered to control the dynamics model. The discrete-time dynamics equation of the production rate is established as a function of the reliability and the learning rate. Then an improved Gauss-learning curve is proposed and applied to aircraft assembling condition. Finally, the bifurcation diagrams and the maximal Lyapunov exponents are used and applied to the experimental study to analyze the dynamic behavior under different combinations of parameters.

Findings

On the basis of the experimental study, it is shown that chaotic behavior really exists in the aircraft assembly lines. The reliability and the Gauss-learning curve can nonlinearly affect the production rate.

Originality/value

This paper applied nonlinear dynamics and chaotic theory to the production analyses of the aircraft assembly lines for the first time. The proposed model has been successfully applied to a practical case, and the result justifies its advantage as well as feasibility to both theory and engineering application.

Details

Assembly Automation, vol. 38 no. 1
Type: Research Article
ISSN: 0144-5154

Keywords

Content available
Article
Publication date: 7 May 2019

Yanan Wang, Jianqiang Li, Sun Hongbo, Yuan Li, Faheem Akhtar and Azhar Imran

Simulation is a well-known technique for using computers to imitate or simulate the operations of various kinds of real-world facilities or processes. The facility or…

Abstract

Purpose

Simulation is a well-known technique for using computers to imitate or simulate the operations of various kinds of real-world facilities or processes. The facility or process of interest is usually called a system, and to study it scientifically, we often have to make a set of assumptions about how it works. These assumptions, which usually take the form of mathematical or logical relationships, constitute a model that is used to gain some understanding of how the corresponding system behaves, and the quality of these understandings essentially depends on the credibility of given assumptions or models, known as VV&A (verification, validation and accreditation). The main purpose of this paper is to present an in-depth theoretical review and analysis for the application of VV&A in large-scale simulations.

Design/methodology/approach

After summarizing the VV&A of related research studies, the standards, frameworks, techniques, methods and tools have been discussed according to the characteristics of large-scale simulations (such as crowd network simulations).

Findings

The contributions of this paper will be useful for both academics and practitioners for formulating VV&A in large-scale simulations (such as crowd network simulations).

Originality/value

This paper will help researchers to provide support of a recommendation for formulating VV&A in large-scale simulations (such as crowd network simulations).

Details

International Journal of Crowd Science, vol. 3 no. 1
Type: Research Article
ISSN: 2398-7294

Keywords

To view the access options for this content please click here
Article
Publication date: 10 June 2021

Hyunju Shin, Jacqueline Eastman and Yuan Li

This study aims to focus on understanding the consumer-luxury brand relationships among Generation Z. Generation Z is an up-and-coming generational cohort that has…

Abstract

Purpose

This study aims to focus on understanding the consumer-luxury brand relationships among Generation Z. Generation Z is an up-and-coming generational cohort that has received limited research attention in the domains of both consumer-brand relationships and luxury branding, despite its growing size and purchasing power. Therefore, this study highlights the distinctive patterns of Generation Z’s relationship with luxury by identifying their choice of a luxury brand, the nature of the brand relationships, what characterizes these relationships and the internal and external influences that shape these relationships.

Design/methodology/approach

This study used brand collage construction. A total of 56 Generation Z respondents created brand collages that covered 38 different luxury brands. The data from the collages and their accompanying descriptions were evaluated using content analysis.

Findings

This study identifies Generation Z’s unique yet expansive view of luxury that encompasses not only traditional luxury but also masstige and non-traditional luxury brands. Moreover, the findings generally support that Generation Z’s relationships with luxury brands are characterized by “like” rather than “love”; while Generation Z may feel a high level of loyalty toward luxury brands in terms of attitudes and behaviors, they do not necessarily have strong, passionate feelings for them.

Originality/value

The findings of this study offer a comprehensive understanding of Generation Z’s brand relationship with luxury. Luxury marketers need to recognize that for Generation Z consumers, luxury is an integral part of their everyday lifestyle more than a display of success, which is clearly different from previous generations.

Details

Journal of Product & Brand Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1061-0421

Keywords

To view the access options for this content please click here
Article
Publication date: 8 January 2018

Yanzhong Wang, Chao Guo, Yuan Li and Guoxing Li

This study aims to establish a friction coefficient model relative to the rotation speed of a wet clutch engagement, which can predict friction coefficient under different…

Abstract

Purpose

This study aims to establish a friction coefficient model relative to the rotation speed of a wet clutch engagement, which can predict friction coefficient under different stages of slipping velocity and different load pressures. In particular, the model has been improved by accounting the speed effect for the perdition of wet friction-element boundary friction, which is significant for understanding the friction mechanisms and for supporting the development of more efficient and related products.

Design/methodology/approach

This research investigated the mechanism of wet friction in a wet clutch engagement. A mixed friction model is established based on the asperity model and Newton’s law of viscosity. To obtain a friction coefficient computed by the model, the normal load shared by both asperities and lubrication fluid needs to be determined. Therefore, rough surface contact mechanism is analysed; a surface topography model is established; and surface parameters are obtained by means of surface topography measurement and reconstruction. Finally, verification of the mixed friction model is achieved.

Findings

Friction will be generated by both the asperity contact and the lubrication film shear relative to the rotation speed. And, the higher the relative speed, the larger the shearing power of lubrication film. It is caused by decrease in contact area of asperity. Surface morphology of a sintered bronze friction disk was obtained by a Laser-Micro-Test. The predicted results by the established model show that the total friction coefficient slightly reduced and then increased suddenly with speed. The surface topography model is responsible for the nonlinear behaviour of the asperity friction. Results of the simulation model are in agreement with those of the wet clutch engagement experiments.

Originality/value

This research is original and it is supported by the national defence project. The wet friction element which is applied on tracked vehicles is analysed for the first time. Through the model, the trend of the friction coefficient can be more accurately predicted. The problem of the wet friction plate modelling difficult is solved by using the mixed friction model.

Details

Industrial Lubrication and Tribology, vol. 70 no. 1
Type: Research Article
ISSN: 0036-8792

Keywords

To view the access options for this content please click here
Article
Publication date: 6 November 2017

Kaiqiang Wang, Shejuan Xie, Hongwei Yuan, Cuixiang Pei, Zhenmao Chen and Weixin Li

In this paper, numerical modelling and dynamical response analysis were performed for the HL-2M vacuum vessel (VV) and shielding plates (SPs) during a plasma disruption by…

Abstract

Purpose

In this paper, numerical modelling and dynamical response analysis were performed for the HL-2M vacuum vessel (VV) and shielding plates (SPs) during a plasma disruption by using an updated ANSYS parametric design language (APDL) code developed by the authors. The purpose of this paper is to investigate the influence of the SPs on the dynamical response of VV owing to a transient electromagnetic (EM) force and to optimize the design of SPs in view of the minimization of the structural dynamic response.

Design/methodology/approach

The Lagrangian approach, i.e. the moving coordinate scheme developed by the authors, was updated to tackle the EM-mechanical coupling effect in the dynamic response analysis of the VV-SPs system due to the transient EM force during plasma disruptions. To optimize the structural design of HL-2M SPs, the influence of the key parameters of SPs, i.e., the side length, thickness and material properties, was clarified on the basis of the numerical results and an optimized design of SPs was obtained.

Findings

The updated APDL code of the Lagrangian approach is efficient for the transient dynamical response analysis of the VV-SPs system owing to the EM force. The SP of a smaller side length, larger thickness tungsten material better mitigates the dynamical response of the VV-SPs system.

Originality/value

The Lagrangian approach was updated for the EM–mechanical coupling dynamical response analysis of the VV-SPs system, and the influence of the SP parameters on the dynamical response of the VV-SPs system of HL-2M Tokamak was clarified.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 36 no. 6
Type: Research Article
ISSN: 0332-1649

Keywords

1 – 10 of over 5000