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Article
Publication date: 8 July 2020

Yang Li, Yaochen Qin, Liqun Ma and Ziwu Pan

The ecological environment of the Loess Plateau, China, is extremely fragile under the context of global warming. Over the past two decades, the vegetation of the Loess…

Abstract

Purpose

The ecological environment of the Loess Plateau, China, is extremely fragile under the context of global warming. Over the past two decades, the vegetation of the Loess Plateau has undergone great changes. This paper aims to clarify the response mechanisms of vegetation to climate change, to provide support for the restoration and environmental treatment of vegetation on the Loess Plateau.

Design/methodology/approach

The Savitsky–Golay (S-G) filtering algorithm was used to reconstruct time series of moderate resolution imaging spectroradiometer (MODIS) 13A2 data. Combined with trend analysis and partial correlation analysis, the influence of climate change on the phenology and enhanced vegetation index (EVI) during the growing season was described.

Findings

The S-G filtering algorithm is suitable for EVI reconstruction of the Loess Plateau. The date of start of growing season was found to gradually later along the Southeast–Northwest direction, whereas the date of the end of the growing season showed the opposite pattern and the length of the growing season gradually shortened. Vegetation EVI values decreased gradually from Southeast to Northwest. Vegetation changed significantly and showed clear differentiation according to different topographic factors. Vegetation correlated positively with precipitation from April to July and with temperature from August to November.

Originality/value

This study provides technical support for ecological environmental assessment, restoration of regional vegetation coverage and environmental governance of the Loess Plateau over the past two decades. It also provides theoretical support for the prediction model of vegetation phenology changes based on remote sensing data.

Details

International Journal of Climate Change Strategies and Management, vol. 12 no. 4
Type: Research Article
ISSN: 1756-8692

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Article
Publication date: 27 July 2021

Liqun Xiang, Yongtao Tan, Geoffrey Shen and Xin Jin

The applications of multi-agent systems (MASs) are considered to be among the most promising paradigms for detailed investigations and reliable problem-solving methods…

Abstract

Purpose

The applications of multi-agent systems (MASs) are considered to be among the most promising paradigms for detailed investigations and reliable problem-solving methods, and MAS applications make it possible for researchers and practitioners to better understand complex systems. Although a number of prior studies have been conducted to address complex issues that arise from construction projects, few studies have summarised the applications and discussed the capacity of MASs from the perspective of construction management. To fill the gap, this paper provides a comprehensive literature review of MAS applications from the perspective of construction management.

Design/methodology/approach

Web of Science and Scopus are the most commonly used international databases in conducting the literature reviews. A total of 86 relevant papers published in SCI-Expanded, SSCI and Ei Compendex journals related to the application of MASs from the perspective of construction management are selected to be analysed and discussed in this paper.

Findings

Based on the 86 collected publications, the utilisations of MASs to support the management of the supply chain and the improvement of project performance are identified from the perspective of construction management, the characteristics and barriers of current MAS applications are analysed, a framework for developing agent-based models to address complex problems is proposed, and future research directions of MAS applications are discussed.

Originality/value

This review can serve as a useful reference for scholars to enhance their understanding of the current research and guide future research on MASs. The proposed framework can help build agent-based models to address complex problems in construction management.

Details

Engineering, Construction and Architectural Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0969-9988

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Article
Publication date: 29 May 2018

Yuning Wu and Liqun Cao

The purpose of this paper is to propose and test a conceptual model that explains racially/ethnically differential confidence in order institutions through a mediating…

Abstract

Purpose

The purpose of this paper is to propose and test a conceptual model that explains racially/ethnically differential confidence in order institutions through a mediating mechanism of perception of discrimination.

Design/methodology/approach

This study relies on a nationally representative sample of 1,001 respondents and path analysis to test the relationships between race/ethnicity, multiple mediating factors, and confidence in order institutions.

Findings

Both African and Latino Americans reported significantly lower levels of confidence compared to White Americans. People who have stronger senses of being discriminated against, regardless of their races, have reduced confidence. A range of other cognitive/evaluative variables have promoted or inhibited people’s confidence in order institutions.

Research limitations/implications

This study relies on cross-sectional data which preclude definite inferences regarding causal relationships among the variables. Some measures are limited due to constraint of data.

Practical implications

To lessen discrimination, both actual and perceived, officials from order institutions should act fairly and impartially, recognize citizen rights, and treat people with respect and dignity. In addition, comprehensive measures involving interventions throughout the entire criminal justice system to reduce racial inequalities should be in place.

Social implications

Equal protection and application of the law by order institutions are imperative, so are social policies that aim to close the structural gaps among all races and ethnicities.

Originality/value

This paper takes an innovative effort of incorporating the currently dominant group position perspective and the injustice perspective into an integrated account of the process by which race and ethnicity affect the perception of discrimination, which, in turn, links to confidence in order institutions.

Details

Policing: An International Journal, vol. 41 no. 6
Type: Research Article
ISSN: 1363-951X

Keywords

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Article
Publication date: 1 March 1996

Liqun Cao, James Frank and Francis T. Cullen

Considers the impact of a range of variables on confidence in the police, including those given little or no previous attention, e.g. measures of crime experience and of…

Abstract

Considers the impact of a range of variables on confidence in the police, including those given little or no previous attention, e.g. measures of crime experience and of conservative political orientation. Draws data from a larger study of urban crime‐prevention issues based on Cincinnati, Ohio. Finds that respondents’ race is not a significant determinant of confidence in the police; the most important determinant being the community context. Suggests that neighborhood social integration may provide a supportive context which could encourage positive evaluation of formal institutional arrangements. Finds that attitudes toward the police (ATP) are regulated by the social context and that much of the existing research, which excluded contextual variables, may have been wrong in making race a significant variable. Notes that confidence in the police is higher in women than in men, but this may be due to a lower rate of antagonistic contact between police and women (not measured here).

Details

American Journal of Police, vol. 15 no. 1
Type: Research Article
ISSN: 0735-8547

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Article
Publication date: 15 June 2010

Hongpu Hu, Yanli Xu, Wannian Liang, Yi Lin, Min Liu, Liqun Liu, Pengfei Hu, XiaoXia Peng and Yingchun Peng

The purpose of this paper is to explore concrete design methodology which can improve production technology.

Abstract

Purpose

The purpose of this paper is to explore concrete design methodology which can improve production technology.

Design/methodology/approach

An application of advanced process control (APC) on distributed control systems (DCS) was designed by defining the project target, scope, and control strategy. Calculation is based on heat and mass conservation, such as RPID=FC 203×900×(DC 241 PV‐400)×1.06/500 DC 241 PV; CATRATE=LEVELRATE×0.22×3.14/4. The quality controller writes the control target on the density controller, which writes the initial value or output value onto the DCS.

Findings

The technique has dramatically increased the control quality of the DCS system: production capacity of the equipment has been improved and the aim of fecundity with little input is realized. The transit time of the product name is shortened and the excess stock is reduced.

Originality/value

The paper is aimed at operational researches and engineers.

Details

Kybernetes, vol. 39 no. 6
Type: Research Article
ISSN: 0368-492X

Keywords

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Article
Publication date: 16 April 2020

Feng Zhang, Lei Zhu and Liqun Wei

Whether shareholders’ involvement in management benefits the organization’s performance remains inconclusive. The purpose of this study is to reconcile the conflicting…

Abstract

Purpose

Whether shareholders’ involvement in management benefits the organization’s performance remains inconclusive. The purpose of this study is to reconcile the conflicting results by exploring whether and under which contexts shareholder involvement may impact firm innovation performance.

Design/methodology/approach

This study attempts to combine previous theoretical views (reactance and agency theories) to examine a curvilinear effect of shareholder involvement on firm innovation performance based on governance related to cost-benefit analysis. Drawing on data from 174 Chinese manufacturing firms, the hierarchical regressions were used to test the hypotheses.

Findings

The study finds that shareholder involvement has a U-shaped relationship with firm innovation performance. Moreover, ownership incentive strengthens the U-shaped relationship, while monitoring weakens it.

Originality/value

Examination of the U-shaped main effect of shareholder involvement and these contingent factors further explains the mixed empirical results concerning the link between shareholder activism and firm-level performance.

Details

Chinese Management Studies, vol. 14 no. 3
Type: Research Article
ISSN: 1750-614X

Keywords

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Article
Publication date: 16 October 2018

Feng Zhang, Liqun Wei, Hongyi Sun and Lo Choi Tung

Although entrepreneurial learning is widely believed as an important factor in shaping one’s entrepreneurial intention, research finds little consistent results on the…

Abstract

Purpose

Although entrepreneurial learning is widely believed as an important factor in shaping one’s entrepreneurial intention, research finds little consistent results on the direct effect of entrepreneurial learning on one’s entrepreneurial intention. To solve the conflicted effects of entrepreneurial learning, the purpose of this paper is to explore how entrepreneurial learning may impact individual entrepreneurial intention.

Design/methodology/approach

Drawing on the theory of planned behavior (TPB), the authors proposed and tested on a three mediating effect model, in which entrepreneurial learning is associated with entrepreneurial intention through attitude, subjective norm and perceived behavioral control toward entrepreneurship. Moreover, the moderating role of prior exposure to entrepreneurship was proposed and tested. Based on a sample of 200 university students who have taken entrepreneurial courses in Hong Kong, the hierarchical regressions and moderated mediation tests were used to test the hypotheses.

Findings

The authors find that the positive relationship between entrepreneurial learning and entrepreneurial intention is significantly mediated by attitude, subjective norm and perceived behavioral control toward entrepreneurship; and the mediating effects of entrepreneurial learning on entrepreneurial intention via attitudes and perceived behavioral control respectively, is moderated by exposure to entrepreneurship.

Originality/value

Contributing to the literature of entrepreneurship education, this study identifies individuals who exposed to the same entrepreneurship education may perform differently in entrepreneurial learning. The findings also help us to better understand the mechanism through which and under which context one’s entrepreneurial learning may enhance his/her entrepreneurial intention.

Details

Chinese Management Studies, vol. 13 no. 1
Type: Research Article
ISSN: 1750-614X

Keywords

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Article
Publication date: 14 July 2020

Liqun Xiang, Yongtao Tan, Xin Jin and Geoffrey Shen

This study aims to identify the stakeholders and critical factors (CFs) of promoting age-friendly communities (AFCs), discuss the relationship between the stakeholders and…

Abstract

Purpose

This study aims to identify the stakeholders and critical factors (CFs) of promoting age-friendly communities (AFCs), discuss the relationship between the stakeholders and CFs and develop a preliminary framework for the briefing stage of promoting AFCs in urban China.

Design/methodology/approach

Stakeholders and CFs were identified through literature review and document analysis. The Delphi method was used to screen the extracted stakeholders and CFs. The focus group methodology was applied to obtain evaluation matrices of relationships between stakeholders and CFs. A two-mode social network was formed to analyse the evaluation matrices generated.

Findings

Results of the analyses indicate that local governments and policymaking institutions, together with project investors, obtained high prioritisations in the stakeholders' group, whilst senior citizens and caregivers appear to rank last. For CFs, communities' environmental factors receive the most attention from stakeholders.

Research limitations/implications

Results of the analyses can only show similarities of the participating stakeholders' opinions on their concerns, and provide researchers and practitioners with initial ideas on analysing stakeholders and CFs at the briefing stage of promoting AFCs. For a specific project, the concerns and prioritisations would change. Diverse voices are necessary and case studies are in need.

Practical implications

Challenges in promoting AFCs in urban China are discussed, and a preliminary framework of the briefing stage is developed for practitioners to follow when promoting AFCs.

Originality/value

This study discusses which CFs should be considered priorities and what consensuses are generally reached by stakeholders. CFs are utilised to interpret stakeholders' relationships, influences and concerns on AFC projects when conducting the social network analysis (SNA).

Details

Engineering, Construction and Architectural Management, vol. 28 no. 1
Type: Research Article
ISSN: 0969-9988

Keywords

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Article
Publication date: 1 September 2000

Liqun Cao, Xiaogang Deng and Shannon Barton

Applying Lundman’s organizational product thesis in explaining citizen complaints against police use of excessive physical force, the current study tests several…

Abstract

Applying Lundman’s organizational product thesis in explaining citizen complaints against police use of excessive physical force, the current study tests several hypotheses with a national data set. Tobit regression analyses of the data show that Lundman’s thesis is partially supported. Both organizational behavior and organizational characteristics are important covariates of the complaint rate against police use of excessive physical force. Although generalization is limited, police departments need to actively recruit more mature persons into the police force, reinforce field training officer programs, and continually provide more in‐service training programs for its members if they are serious in reducing citizens’ complaints.

Details

Policing: An International Journal of Police Strategies & Management, vol. 23 no. 3
Type: Research Article
ISSN: 1363-951X

Keywords

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Article
Publication date: 18 May 2015

Liqun Cao

The purpose of this paper is to differentiate clearly between three frequently used concepts found in the research literature on public perceptions of the police…

Abstract

Purpose

The purpose of this paper is to differentiate clearly between three frequently used concepts found in the research literature on public perceptions of the police: confidence in the police, satisfaction with the police and trust in the police.

Design/methodology/approach

Systemic literature review and thematic analysis are employed to assess each key term in the official English language dictionary and in the research literature. Their individual origins, their evolvement and their current usages are examined with great care.

Findings

The findings of the study suggest that the three phrases are indeed distinct in their connotation. It is concluded that “confidence in the police” is the preferred choice when we survey the citizenry about the level of support for the police and when the police is evaluated as a political institution.

Practical implications

Given that most criminologists believe that we are doing scientific research, it is our duty to be attentive to the pitfalls of lack of conceptual clarity.

Originality/value

The essay advances the conceptual clarification of one of the popular themes in the study of the police.

Details

Policing: An International Journal of Police Strategies & Management, vol. 38 no. 2
Type: Research Article
ISSN: 1363-951X

Keywords

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