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1 – 10 of 823
Article
Publication date: 1 September 2017

Xuhui Wang, Kewei Liu, Kai Wang, Jian Gong, Yanjun Wang and Yajiang Fan

Urban parks play a key role in recreational activities, public health, and ecosystem services in urban areas. Using GIS and Fragstats, this study investigated the…

Abstract

Urban parks play a key role in recreational activities, public health, and ecosystem services in urban areas. Using GIS and Fragstats, this study investigated the spatiotemporal dynamics of urban parks in Xi'an, China from 1949 to 2015 and the corresponding driving forces. The results show that the number and area of parks in Xi'an increased constantly during this period, especially from 2000 to 2015. Up to 2015, small green spaces, usually adjacent to streets, occupied the largest proportion among all types of parks. Archaeological parks were the largest in total area, but wetland parks were leading in average size of a single park. The density of parks was negatively correlated with their distance to the Clock Tower at the center of Xi'an. The dynamics of urban parks in highly urbanized areas were significantly different from that of their counterparts in suburban areas. Driving forces such as urban planning, urbanization and green space policies, and milestone events in the city's development jointly had a great effect on the distribution of parks in Xi'an. The research outcomes will support the upcoming Green Space Planning of Xi'an and benefit the pursuit of sustainability and human wellbeing.

Details

Open House International, vol. 42 no. 3
Type: Research Article
ISSN: 0168-2601

Keywords

Article
Publication date: 9 July 2020

Cizhi Wang, Giulia Flamini, Kai Wang, Rong Pei and Chiyin Chen

The purpose of this paper is to adopt a collective perspective in the study of entrepreneurial decision-making processes and empirically analyse the ways in which social…

Abstract

Purpose

The purpose of this paper is to adopt a collective perspective in the study of entrepreneurial decision-making processes and empirically analyse the ways in which social relationships between family members can shape their collective entrepreneurial decision-making behaviour (ED).

Design/methodology/approach

This paper considers the family social capital (FSC) in inducing overall conformity to the focal family member's decision to exploit an opportunity. In terms of the seminal construct of social capital, the authors propose three FSC dimensions that can be used to induce conformity: structural, relational and cognitive dimensions. Then, the authors design questionnaires to collect data pertaining to the relationships between the family members' ED and the FSC. Finally, the authors collect 152 valid questionnaires from Chinese family firms.

Findings

The data analysis consists of two parts. The first section of this paper analyses conformity by testing the discriminant validity of models. Regression analysis is then used to test the relationship between family members' ED and the FSC. Significant relationships between the cognitive dimension of FSC and the entrepreneur's decision-making are found.

Originality/value

The research contributes towards academic literature concerning both entrepreneurship and social capital. On the one hand, this paper is one of the rare pieces of entrepreneurial research that responds to the call for the study of entrepreneurship from a collective perspective. On the other hand, our study quantitatively tests the impact of FSC at a multidimensional level. It provides conclusions regarding the social influence of other family members and provides insights into social capital by studying entrepreneurship from a social/community perspective.

Details

Management Decision, vol. 59 no. 5
Type: Research Article
ISSN: 0025-1747

Keywords

Article
Publication date: 25 January 2022

Kai Wang, Massimiliano Matteo Pellegrini, Cizhi Wang, Hejun Fan and Jiamu Sun

An increased globalisation pushes forward the study of international entrepreneurship that however has been mainly analysed at a macro-environmental and an individual…

Abstract

Purpose

An increased globalisation pushes forward the study of international entrepreneurship that however has been mainly analysed at a macro-environmental and an individual level. The authors want instead identify the determinants of international entrepreneurship from a firm-level perspective, specifically in relation to the key decision-making entity – the board of directors. The authors focused on the overall composition of the board of directors in terms of gender diversity and how this affects multi-subject decision-making when it comes to international entrepreneurship.

Design/methodology/approach

Based on entrepreneurial decision-making and the neo-institutional theory, the authors analyse the relationship between gender diversity in boards of directors and firms' international entrepreneurship, assessing how state ownership and ownership concentration moderate this relationship. Using a sample made up of China's listed companies from 2009 to 2018, the authors empirically test the main effect and the moderating effects.

Findings

International entrepreneurship is less prevalent in firms with more female directors, but in terms of quality of the decisions, these boards perform better. State ownership and ownership concentration can strengthen and weaken the relationship between the presence of female directors and the intensity of international entrepreneurship, respectively.

Originality/value

Firstly, the authors draw attention to the implications of gender diversity in boards of directors, calling for further studies on communication and collaboration patterns within multi-subject decision-making. Secondly, the authors’ conclusions enrich academic literature on female directors by exploring the roles they play in firms' decision-making when it comes to international entrepreneurship.

Details

International Journal of Entrepreneurial Behavior & Research, vol. 28 no. 3
Type: Research Article
ISSN: 1355-2554

Keywords

Article
Publication date: 29 October 2019

Kai Wang, Massimiliano Matteo Pellegrini, Jiaan Xue and Cizhi Wang

Strategic change is integral to the survival and development of firms. The purpose of this paper is to analyze the impact of environmental uncertainty on a firm’s…

Abstract

Purpose

Strategic change is integral to the survival and development of firms. The purpose of this paper is to analyze the impact of environmental uncertainty on a firm’s strategic change and further demonstrates the moderating role of political connection and family ownership on the relationship between environmental uncertainty and a firm’s strategic change.

Design/methodology/approach

This paper uses the population sample of Chinese firms listed on the Shenzhen Stock Exchange and the Shanghai Stock Exchange from 2008 to 2014 and quantitatively tests hypotheses through correlation analysis, regression analysis and other methods.

Findings

Environmental uncertainty has a positive effect on the degree of strategic changes made. Political connection and family ownership negatively moderate the impact of the two dimensions of environmental uncertainty (environmental dynamism and environmental munificence) on strategic changes.

Originality/value

Conclusions enrich the research of other studies on firms’ strategic changes. From an open systems perspective, this paper reveals the influences of external environmental factors on firms’ strategic changes. In addition to this, in analyzing the ways in which environmental uncertainty affects a firm’s strategic change, the research expands the application scope of information processing theory and resource-based view. This paper also provides significant practical observations on firms’ strategic decision making in this area.

Details

Journal of Family Business Management, vol. 10 no. 4
Type: Research Article
ISSN: 2043-6238

Keywords

Content available
Article
Publication date: 30 June 2016

Kai Wang, Shuaian Wang, Lu Zhen and Xiaobo Qu

This paper aims to conduct a review on cruise shipping and the cruise shipping industry. The current trends are analyzed for the industry, showing that this industry is…

15988

Abstract

Purpose

This paper aims to conduct a review on cruise shipping and the cruise shipping industry. The current trends are analyzed for the industry, showing that this industry is still young and has great potential to boom. Meanwhile, the Asia market is the fastest growth region among the global, to which increasing cruise ships are repositioned by major cruise lines. However, for such a promising industry, the literature review on some state-of-the-art research works suggests that the research works that have been conducted for the cruise shipping are quite limited, and the majority of the works belongs to empirical and descriptive studies, which does not provide optimization-based quantitative analysis on some operation planning problems.

Design/methodology/approach

This paper conducts a review on cruise shipping and the cruise shipping industry.

Findings

In reality, there are some important operation planning problems faced by cruise lines or cruise ships, and four of them are addressed in this paper in response to the fast growing trend. The addressed operation planning problems are cruise fleet management, cruise ship deployment, cruise itinerary design and cruise service planning.

Originality/value

The importance and the attention for the research on the problems are also elaborated in the paper.

Details

Maritime Business Review, vol. 1 no. 2
Type: Research Article
ISSN: 2397-3757

Keywords

Article
Publication date: 14 December 2021

Yun Huang, Kaizhou Gao, Kai Wang, Haili Lv and Fan Gao

The purpose of this paper is to adopt a three-stage cloud-based management system for optimizing greenhouse gases (GHG) emission and marketing decisions with supplier…

Abstract

Purpose

The purpose of this paper is to adopt a three-stage cloud-based management system for optimizing greenhouse gases (GHG) emission and marketing decisions with supplier selection and product family design in a multi-level supply chain with multiple suppliers, one single manufacturer and multiple retailers.

Design/methodology/approach

The manufacturer purchases optional components of a certain functionality from his alternative suppliers and customizes a set of platform products for retailers in different independent market segments. To tackle the studied problem, a hierarchical analytical target cascading (ATC) model is proposed, Jaya algorithm is applied and supplier selection and product family design are implemented in its encoding procedure.

Findings

A case study is used to verify the effectiveness of the ATC model in solving the optimization problem and the corresponding algorithm. It has shown that the ATC model can not only obtain close optimization results as a central optimization method but also maintain the autonomous decision rights of different supply chain members.

Originality/value

This paper first develops a three-stage cloud-based management system to optimize GHG emission, marketing decisions, supplier selection and product family design in a multi-level supply chain. Then, the ATC model is proposed to obtain the close optimization results as central optimization method and also maintain the autonomous decision rights of different supply chain members.

Details

Industrial Management & Data Systems, vol. 122 no. 6
Type: Research Article
ISSN: 0263-5577

Keywords

Article
Publication date: 10 August 2020

Yongzhen Ke, Wenjie Zhao, Shuai Yang, Kai Wang and Jiaying Liu

This paper aims to obtain a texture dental model with real images and improve the rendering effect of the dental model.

Abstract

Purpose

This paper aims to obtain a texture dental model with real images and improve the rendering effect of the dental model.

Design/methodology/approach

The paper proposes a semiautomatic method to construct a realistic dental model with real images based on two-dimensional/three-dimensional (2D/3D) registration. First, a 3D digital dental model and three intraoral images are obtained by a 3D scanner and digital single-lens reflex camera. Second, the camera projection poses for every intraoral images are calculated by using the single-objective optimization algorithm. Third, with camera poses, the preliminary projection texture mapping is performed; besides, the seam between two textures is marked. Finally, the marked regions are fused based on the image pyramid to eliminate obvious seams.

Findings

The paper provides a method to construct a realistic dental model. The method can map three intraoral images to the dental model. The experimental results show that the textured dental model without obvious distortion, dislocation and seams is constructed with simple interactions.

Originality/value

The proposed method can be applied to the digital smile design system to improve the communication efficiency between doctors, patients and technicians.

Details

Engineering Computations, vol. 38 no. 2
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 2 January 2018

Wenju Yan, Hao Chen, Lei Chen and Kai Wang

This paper aims to establish a modified variable coefficient calculation model to analyse the control parameter effect on the iron loss of switched reluctance motor under…

Abstract

Purpose

This paper aims to establish a modified variable coefficient calculation model to analyse the control parameter effect on the iron loss of switched reluctance motor under pulse width modulation (PWM) mode.

Design/methodology/approach

The finite element model is solved to get the flux density by python language. Due to non-sinusoidal flux density feature and the effect of PWM excitation, the Fourier transform is applied in consideration of harmonic components. To improve the accuracy of iron loss computation, the effect of minor loops is considered by using the rain-flow counting method.

Findings

When the speed fluctuates around the set speed and the fluctuations are relatively small, it is useful to reduce the iron loss with smaller duty ratio and turn-on angle or greater duty ratio and smaller turn-off angle. The iron loss is less affected by chopping frequency, while the iron loss increases obviously with higher conduction angles. The iron loss under non-energy-returnable-voltage-chop mode is greater than energy-returnable-voltage-chop mode.

Originality/value

The modified variable coefficient MIEM5 iron loss model is proposed to improve the accuracy of iron loss calculation. Then the control parameters such as duty ratio, chopping frequency, turn on angle and turn off angle are analysed under PWM mode.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 37 no. 1
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 4 December 2018

Wenju Yan, Hao Chen, Tong Xu and Kai Wang

An improved simulation model of switched reluctance motor (SRM) for steady-state operation that considers the core losses in the stator and rotor is established to obtain…

Abstract

Purpose

An improved simulation model of switched reluctance motor (SRM) for steady-state operation that considers the core losses in the stator and rotor is established to obtain the steady performance of the high-speed SRM during the design, analysis and control of SRM driving system more accurately.

Design/methodology/approach

The transient core loss model for the material and SRM is presented. Then a new method for calculating the flux density of the motor in real time is introduced, and a steady-state simulation model of the SRM including real-time transient core losses calculation model is established according to the transient flux density. Because the transient core losses calculated by above method are the total core losses of the motor, a core losses distribution method is proposed and the steady-state simulation model of the SRM including the distributed core losses’ effect on the phase winding is established.

Findings

The comparison results show that the proposed model has higher accuracy than the traditional model, excluding core losses, especially at the moments when phase voltage is turn-on and turn-off. The proportion of the core losses to the motor losses increases with the increase in speed. So, the core losses’ effect on the steady-state performance of the high-speed SRM cannot be ignored.

Originality/value

The method to obtain flux density in the real time is presented and the improved steady-state simulation model of SRM that considering transient core losses is proposed.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 38 no. 1
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 1 December 2020

Kai Wang, Ying Wang, Yun Ma and Sutian Xu

Big science has become a new normative standard in transforming science policy with the interdisciplinary research (IDR) pattern serving as an organizational strategy in…

Abstract

Purpose

Big science has become a new normative standard in transforming science policy with the interdisciplinary research (IDR) pattern serving as an organizational strategy in scientific inquiries. This paper aims to show how policy-making is organized in the real situation of the R&D sectors for this trend.

Design/methodology/approach

Cultural theory and new institutionalism are tinkered for a close examination of the ways in which IDR has been enacted and implemented in BGI Group, an exemplar of big science and leading biotechnology research facility in China, by interrogating institutional cultures in the context of big science projects, whilst investigating how IDR is evolved against the specific social process of interaction.

Findings

The findings include that the IDR has profoundly influenced how scientific knowledge is produced, the social interactions between stakeholders and the innovation of research policy within the network of China’s biotechnology industry.

Originality/value

Advances in biotechnology and related fields are redrafting China’s hi-tech industry development and governance landscape. This is the first empirical study of innovation in R&D management for big science project as presented by the IDR pattern in the BGI. It makes an important contribution to the understanding of both the nature of China’s biotechnology industry governance practices and the culture of scientific innovation within which the IDR mediates social interactions and thereby the policy-making process.

Details

International Journal of Innovation Science, vol. 12 no. 5
Type: Research Article
ISSN: 1757-2223

Keywords

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