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Article
Publication date: 21 December 2020

Lihua Wu, Mi Zhao and Xiuli Du

The finite element method (FEM) is used to calculate the two-dimensional anti-plane dynamic response of structure embedded in D’Alembert viscoelastic multilayered soil on the…

194

Abstract

Purpose

The finite element method (FEM) is used to calculate the two-dimensional anti-plane dynamic response of structure embedded in D’Alembert viscoelastic multilayered soil on the rigid bedrock. This paper aims to research a time-domain absorbing boundary condition (ABC), which should be imposed on the truncation boundary of the finite domain to represent the dynamic interaction between the truncated infinite domain and the finite domain.

Design/methodology/approach

A high-order ABC for scalar wave propagation in the D’Alembert viscoelastic multilayered media is proposed. A new operator separation method and the mode reduction are adopted to construct the time-domain ABC.

Findings

The derivation of the ABC is accurate for the single layer but less accurate for the multilayer. To achieve high accuracy, therefore, the distance from the truncation boundary to the region of interest can be zero for the single layer but need to be about 0.5 times of the total layer height of the infinite domain for the multilayer. Both single-layered and multilayered numerical examples verify that the accuracy of the ABC is almost the same for both cases of only using the modal number excited by dynamic load and using the full modal number of infinite domain. Using the ABC with reduced modes can not only reduce the computation cost but also be more friendly to the stability. Numerical examples demonstrate the superior properties of the proposed ABC with stability, high accuracy and remarkable coupling with the FEM.

Originality/value

A high-order time-domain ABC for scalar wave propagation in the D’Alembert viscoelastic multilayered media is proposed. The proposed ABC is suitable for both linear elastic and D’Alembert viscoelastic media, and it can be coupled seamlessly with the FEM. A new operator separation method combining mode reduction is presented with better stability than the existing methods.

Details

Engineering Computations, vol. 38 no. 6
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 5 August 2019

Huifang Li, Mi Zhao, Lihua Wu, Piguang Wang and Xiuli Du

The purpose of this paper is to propose a stable high-order absorbing boundary condition (ABC) based on new continued fraction for scalar wave propagation in 2D and 3D unbounded…

178

Abstract

Purpose

The purpose of this paper is to propose a stable high-order absorbing boundary condition (ABC) based on new continued fraction for scalar wave propagation in 2D and 3D unbounded layers.

Design/methodology/approach

The ABC is obtained based on continued fraction (CF) expansion of the frequency-domain dynamic stiffness coefficient (DtN kernel) on the artificial boundary of a truncated infinite domain. The CF which has been used to the thin layer method in [69] will be applied to the DtN method to develop a time-domain high-order ABC for the transient scalar wave propagation in 2D. Furthermore, a new stable composite-CF is proposed in this study for 3D unbounded layers by nesting the above CF for 2D layer and another CF.

Findings

The ABS has been transformed from frequency to time domain by using the auxiliary variable technique. The high-order time-domain ABC can couple seamlessly with the finite element method. The instability of the ABC-FEM coupled system is discussed and cured.

Originality/value

This manuscript establishes a stable high-order time-domain ABC for the scalar wave equation in 2D and 3D unbounded layers, which is based on the new continued fraction. The high-order time-domain ABC can couple seamlessly with the finite element method. The instability of the coupled system is discussed and cured.

Details

Engineering Computations, vol. 36 no. 7
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 1 May 2007

Desheng Chen, Chunqing Li, Xianjie Xu and Jiasu Lei

This paper analysises China’s optimal scale of foreign reserve during 1985‐2004 with single ratio and synthesis ratio. The single ratio analysis shows that China’s foreign reserve…

449

Abstract

This paper analysises China’s optimal scale of foreign reserve during 1985‐2004 with single ratio and synthesis ratio. The single ratio analysis shows that China’s foreign reserve to import ratio has exceeded 40 per cent after foreign exchange rate united in 1994. The foreign reserve to money supply ratio is high as 23.8 per cent, and will exceed 25 per cent of international alertness in 2005. The foreign reserve to debt ratio largely exceeded 30 per cent of international alertness. The current account balance to GDP ratio and the current account balance plus FDI to GDP ratio is out of international alertness in most years. The synthesis ratio analysis show that China’s real foreign exchange reserve exceeded foreign exchange demand of debt, FDI and import during 1996‐2004, and the exceeded ratio is close to 90 per cent in 2004. This paper also discusses influence of capital flight after 1995 and international hot money after 2002 to China’s optimal scale of foreign exchange.

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Journal of Asia Business Studies, vol. 1 no. 2
Type: Research Article
ISSN: 1558-7894

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Article
Publication date: 11 September 2017

Jinnan Wu, Lin Liu and Lihua Huang

Although perceived risk and usefulness have been identified as two major factors that influence consumer acceptance of an innovative mobile payment (m-payment), relatively few…

5568

Abstract

Purpose

Although perceived risk and usefulness have been identified as two major factors that influence consumer acceptance of an innovative mobile payment (m-payment), relatively few researchers have explored the impact of affective factors on perceived risk and usefulness, and the relationship between perceived risk and usefulness. Also, it is unclear whether there is a difference in the acceptance intention among users across different diffusion stages of this innovation. The purpose of this paper is to investigate the role of positive emotion in consumer acceptance of WeChat payment across time.

Design/methodology/approach

This study proposed and validated a framework integrating the consumer response system model and the affect heuristic. A total of 484 valid responses were collected through two online surveys at two diffusion stages of WeChat payment technology. The structural equation modeling and multigroup analysis were used to test the hypotheses.

Findings

The results show that users’ acceptance intention is relatively related to perceived risk, perceived usefulness, and positive emotion. Positive emotion has a strong negative impact on perceived risk and a positive impact on perceived usefulness. Also, perceived usefulness strongly decreases users’ perception of risk. Multigroup analyses find that both positive emotion and perceived risk have significant positive and negative impacts on acceptance intention at the stage of market introduction rather than market growth. Rather, the influence of positive usefulness on acceptance intention is significantly higher at the stage of market growth than at market introduction.

Originality/value

This study indicates that exploring the role of positive emotion and the moderating effect of diffusion stages in m-payment acceptance provides a more comprehensive understanding of how to achieve a greater acceptance rate of an innovative m-payment.

Details

Industrial Management & Data Systems, vol. 117 no. 8
Type: Research Article
ISSN: 0263-5577

Keywords

Available. Open Access. Open Access
Article
Publication date: 9 December 2019

Qingqing Wu, Xianguan Zhao, Lihua Zhou, Yao Wang and Yudi Yang

With the rapid development of internet technology, open online social networks provide a broader platform for information spreading. While dissemination of information provides…

1000

Abstract

Purpose

With the rapid development of internet technology, open online social networks provide a broader platform for information spreading. While dissemination of information provides convenience for life, it also brings many problems such as security risks and public opinion orientation. Various negative, malicious and false information spread across regions, which seriously affect social harmony and national security. Therefore, this paper aims to minimize negative information such as online rumors that has attracted extensive attention. The most existing algorithms for blocking rumors have prevented the spread of rumors to some extent, but these algorithms are designed based on entire social networks, mainly focusing on the microstructure of the network, i.e. the pairwise relationship or similarity between nodes. The blocking effect of these algorithms may be unsatisfactory in some networks because of the sparse data in the microstructure.

Design/methodology/approach

An algorithm for minimizing the influence of dynamic rumor based on community structure is proposed in this paper. The algorithm first divides the network into communities, and integrates the influence of each node within communities and rumor influence probability to measure the influence of each node in the entire network, and then selects key nodes and bridge nodes in communities as blocked nodes. After that, a dynamic blocking strategy is adopted to improve the blocking effect of rumors.

Findings

Community structure is one of the most prominent features of networks. It reveals the organizational structure and functional components of a network from a mesoscopic level. The utilization of community structure can provide effective and rich information to solve the problem of data sparsity in the microstructure, thus effectively improve the blocking effect. Extensive experiments on two real-world data sets have validated that the proposed algorithm has superior performance than the baseline algorithms.

Originality/value

As an important research direction of social network analysis, rumor minimization has a profound effect on the harmony and stability of society and the development of social media. However, because the rumor spread has the characteristics of multiple propagation paths, fast propagation speed, wide propagation area and time-varying, it is a huge challenge to improve the effectiveness of the rumor blocking algorithm.

Details

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

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Article
Publication date: 5 December 2022

Yalin Wang, Yaokuang Li, Juan Wu, Lihua Fu and Ruixin Liang

Emerging evidence regarding crowdfunding challenges long-standing “gender gap” views of traditional entrepreneurial financing and indicates that female entrepreneurs may have an…

524

Abstract

Purpose

Emerging evidence regarding crowdfunding challenges long-standing “gender gap” views of traditional entrepreneurial financing and indicates that female entrepreneurs may have an advantage in crowdfunding. Yet, the literature primarily focuses on influences at the individual level, largely overlooking the interaction between gender and higher-level culture. Drawing on Hofstede's cultural dimensions, this paper aims to investigate the associations among entrepreneurs' gender, culture and crowdfunding performance, particularly in how entrepreneurs' gender and culture interact to affect crowdfunding performance.

Design/methodology/approach

Leveraging a sample of 21,730 Kickstarter crowdfunding campaigns and combining these data with data from Hofstede's study, the World Bank (WB) and the International Telecommunication Union (ITU), this study applies multilevel models to empirically investigate this question across 22 countries/regions.

Findings

This study confirms that the advantageous effect, that female entrepreneurs are likely to obtain better fundraising performance over their male counterparts, does exist in crowdfunding. Furthermore, the findings reveal that this advantageous effect of female entrepreneurs on crowdfunding performance would be reinforced when cultures of individualism and indulgence are high and culture of long-term orientation is low.

Originality/value

This study contributes to the literature on gender gaps in crowdfunding and entrepreneurial financing by adding an important culture-related boundary condition to the gender preference reported in earlier crowdfunding work. Moreover, the paper extends the knowledge about the impact of culture on crowdfunding performance and enlightens future research on leveraging multilevel modeling approach to examine the complex interplay between individuals and situations in crowdfunding.

Details

International Journal of Entrepreneurial Behavior & Research, vol. 29 no. 2
Type: Research Article
ISSN: 1355-2554

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Article
Publication date: 1 October 2019

Suqin Liao, Lihua Fu and Zhiying Liu

This study aims to assess how firm functional capability moderates the relationship between two types of open innovation and performance, with a special focus on the role of…

2135

Abstract

Purpose

This study aims to assess how firm functional capability moderates the relationship between two types of open innovation and performance, with a special focus on the role of technological capability and the join effect market information management capability. This paper develops and tests a research model, which assesses how the performance implications of two open innovation forms are shaped by the technological capability and how such an effect is contingent on market information management capability.

Design/methodology/approach

Survey data were collected from 238 Chinese high-tech enterprises. Structural equation modeling and linear regression were used to test the data. Then, the main research questions were answered.

Findings

Empirically results show that technological capability strengthens the influence of inbound open innovation on firm performance. However, the moderate effect of technological capability on the relationship between outbound open innovation and firm performance remains unsupported. A higher technological capability with a high level of market information management capability increases the efficacy of outbound open innovation in gaining superior performance. Additional analysis shows that when firms implement inbound activities and possess a strong technological capability, they will achieve higher performance if they possess a moderate level of market information management capability, compared with a high or low level.

Originality/value

This paper provides new evidence on the benefits of different open innovation strategies on firm’s performance and, more importantly, the specific firm-level contingencies (technological capability and market information management capability) under which these benefits are more likely to be enhanced. It clarifies what the capabilities are and how they interact to foster the robust open innovation strategies, which sheds new light on the boundary conditions that affect the open innovations–firm performance relationship.

Details

Journal of Business & Industrial Marketing, vol. 35 no. 1
Type: Research Article
ISSN: 0885-8624

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Article
Publication date: 6 November 2017

Lihua Li, Maria Estela Varua, Adam M. Komarek, Sriram Shankar and William D. Bellotti

The purpose of this paper is to explore the endogenous relationship between production specialisation and market commercialisation with an empirical study of farmers in Northwest…

419

Abstract

Purpose

The purpose of this paper is to explore the endogenous relationship between production specialisation and market commercialisation with an empirical study of farmers in Northwest China.

Design/methodology/approach

The three-stage least squares were used to address simultaneity and over-identification problems in comparison with two-stage least squares (2SLS). The Durbin-Wu-Hausman test was employed to identify the endogeneity of the commercialisation and specialisation variables. The validity, relevance, and strength of the instruments were tested using the Stock-Yogo weak instrument diagnostics test.

Findings

A two-way interrelationship between specialisation and commercialisation were confirmed, and suggest that farmers’ decisions on farm commercialisation and production specialisation are actually separate and interacting.

Social implications

By demonstrating that a virtuous cycle exists between agricultural commercialisation and on-farm specialisation, policies can be formulated to complement these two effects that may help increase small holders’ income. Farmers’ market participation can be indirectly improved by combining market improvement and risk management tools to encourage production specialisation.

Originality/value

The insights of this study cast further light onto the farm market participation theory by emphasising that higher asset endowments enable small farmers to specialise in production with comparative advantage.

Details

China Agricultural Economic Review, vol. 9 no. 4
Type: Research Article
ISSN: 1756-137X

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Book part
Publication date: 21 April 2022

Sampson Lee Blair, Timothy J. Madigan and Fang Fang

Abstract

Details

Mate Selection in China: Causes and Consequences in the Search for a Spouse
Type: Book
ISBN: 978-1-78769-331-9

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Article
Publication date: 3 April 2019

Gaoyan Lyu, Lihua Chen and Baofeng Huo

The purpose of this paper is to examine the relationship between logistics park platforms, logistics location and operational performance. Relationship analysis helps managers…

2059

Abstract

Purpose

The purpose of this paper is to examine the relationship between logistics park platforms, logistics location and operational performance. Relationship analysis helps managers respond to the changes that today’s logistics companies face, which include limited resources and facilities, market uncertainties and financial instabilities.

Design/methodology/approach

A structured questionnaire is developed based on the resource-based view. Qualitative data collected from 273 companies in China are used in a structural equation model to test the conceptual model.

Findings

In logistics parks, logistics park platforms and location positively influence companies’ resource integration, which is positively related to operational performance. While logistics park platforms can improve operational performance directly, logistics location cannot. Resource integration is thus a full mediator between logistics location and operational performance, while it is a partial mediator between logistics park platforms and operational performance.

Originality/value

This study fills a gap in the literature on logistics parks, particularly on the relationships among operational performance, resource integration, logistics park platforms and the location of logistics parks in China. The authors provide guidelines for logistics park managers to organize their resources and develop capabilities for improving the operational performance of companies in logistics parks.

Details

The International Journal of Logistics Management, vol. 30 no. 2
Type: Research Article
ISSN: 0957-4093

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