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Article
Publication date: 21 February 2019

Liang Zhang, Changzhu Wei, Yin Diao and Naigang Cui

This paper aims to investigate the problem of on-line orbit planning and guidance for an advanced upper stage.

Abstract

Purpose

This paper aims to investigate the problem of on-line orbit planning and guidance for an advanced upper stage.

Design/methodology/approach

The double impulse optimal transfer orbit is planned by the Lambert algorithm and the improved particle swarm optimization (IPSO) method, which can reduce the total velocity increment of the transfer orbit. More specially, a simplified formula is developed to obtain the working time of the main engine for two phases of flight based on the theorem of impulse. Subsequently, the true anomalies of the start position and the end position for both two phases are planned by the Newton iterative algorithm and the Kepler equation. Finally, the first phase of flight is guided by a novel iterative guidance (NIG) law based on the true anomaly update with respect to the geometrical relationship. Also, a completely analytical powered explicit guidance (APEG) law is presented to realize orbital injection for the second phase of flight.

Findings

Simulations including Monte Carlo and three typical orbit transfer missions are carried out to demonstrate the efficiency of the proposed scheme.

Originality/value

A novel on-line orbit planning algorithm is developed based on the Lambert problem, IPSO optimization method and Newton iterative algorithm. The NIG and APEG are presented to realize the designed transfer orbit for the first and second phases of flight. Both two guidance laws achieve higher orbit injection accuracies than traditional guidance laws.

Details

Aircraft Engineering and Aerospace Technology, vol. 91 no. 4
Type: Research Article
ISSN: 1748-8842

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Article
Publication date: 9 March 2010

Yuning Wu and Ivan Y. Sun

This study aims to examine Chinese college students' perceptions of police.

Abstract

Purpose

This study aims to examine Chinese college students' perceptions of police.

Design/methodology/approach

Using survey data collected from over 400 college students in two cities, the study empirically analyzes the global and specific perceptions of police among Chinese college students and factors that accounted for the variation in Chinese college students' evaluations of police. The study incorporates a broader range of explanatory variables to explain Chinese college students' attitudes toward the police, including demographic characteristics, crime and criminal justice experience, perceptions of quality of life, and locality. The study reviews research on public perceptions of police published in Chinese academic journals.

Findings

College students' global satisfaction with police as well as their specific evaluations of police fairness, effectiveness, and integrity were significantly related to their crime and criminal justice experience, perceived quality of life, and locality. Students' background characteristics only had a weak effect on attitudes toward police.

Research limitations/implications

More empirical research is warranted to gauge the extent of Chinese satisfaction with police and police performance. Future research should continue incorporating crime and criminal justice factors into analysis.

Practical implications

Findings of the study provide Chinese police administrators with useful references and directions to improve police‐community relations..

Originality/value

This study represents one of the few attempts to empirically assess Chinese citizens' perceptions of police. It examines not just Chinese college students' global satisfaction with the police, but also their more specific views of various areas of police performance including fairness, effectiveness, and integrity.

Details

Policing: An International Journal of Police Strategies & Management, vol. 33 no. 1
Type: Research Article
ISSN: 1363-951X

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Article
Publication date: 5 July 2021

Huai Jian Beh, Ali Rashidi, Amin Talei and Yee Sye Lee

The construction site operates under a hazardous environment that requires a high level of understanding in building systems to minimise accidents. However, the current…

Abstract

Purpose

The construction site operates under a hazardous environment that requires a high level of understanding in building systems to minimise accidents. However, the current building education generally adopts paper-based learning approaches that lack hands-on experiences. Furthermore, to achieve Industrial Revolution 4.0 in line with any unforeseen pandemic, the most optimum solution is to transition from physical to technological-based building education. This paper aims to address the problems by proposing a game-based virtual reality (GBVR) for building utility inspection training.

Design/methodology/approach

The feasibility of the GBVR for building the utility inspection training approach is validated on a sample of undergraduate engineering students through user experience (survey) and performance-based comparisons against traditional paper-based training method.

Findings

The results show that the developed GBVR training has higher system usability in terms of visual output and knowledge retention than paper-based training due to visualisation technologies. The GBVR training method has also higher user-friendliness because of the higher motivational and engagement factors through the adoption of virtual reality and game-based learning.

Research limitations/implications

GBVR training required a longer training duration and achieved a lower performance score (effectiveness) but can be improved by transitioning into hands-on tasks. This study has the potentials to be extended to vocational training platforms for competency development in the construction workforce by using cutting-edge extended reality technologies.

Originality/value

This paper portrays the benefits of integrating virtual reality technology in building education to overcome the low practicality and engagement of paper-based training.

Details

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

Keywords

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Article
Publication date: 1 January 2006

Tony Fang

To examine the nature of Chinese business negotiating style in Sino‐Western business negotiations in business‐to‐business markets involving large industrial projects from…

Abstract

Purpose

To examine the nature of Chinese business negotiating style in Sino‐Western business negotiations in business‐to‐business markets involving large industrial projects from a social cultural point of view.

Design/methodology/approach

A conceptual approach developed from personal interviews.

Findings

This study reveals that the Chinese negotiator does not possess an absolute negotiating style but rather embraces a mixture of different roles together: “Maoist bureaucrat in learning”, “Confucian gentleman”, and “Sun Tzu‐like strategist”. The Chinese negotiating strategy is essentially a combination of cooperation and competition (termed as the “coop‐comp” negotiation strategy in this study). Trust is the ultimate indicator of Chinese negotiating propensities and role choices.

Research limitations/implications

The focus of this study is on Chinese negotiating style shown in large B2B negotiations with Chinese SOEs.

Originality/value

Differing from most other studies on Chinese negotiating style which tend to depict the Chinese negotiator as either sincere or deceptive, this study points out that there exists an intrinsic paradox in Chinese negotiating style which reflects the Yin Yang thinking. The Chinese negotiator has a cultural capacity to negotiate both sincerely and deceptively and he/she changes coping strategies according to situation and context, all depending on the level of trust between negotiating partners.

Details

Journal of Business & Industrial Marketing, vol. 21 no. 1
Type: Research Article
ISSN: 0885-8624

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Article
Publication date: 28 March 2013

Check‐Teck Foo

The aim of this paper is to illustrate how scholars may adopt a multi‐method – not just multidisciplinary – approach on research on conflict management. Taking the Diaoyu…

Abstract

Purpose

The aim of this paper is to illustrate how scholars may adopt a multi‐method – not just multidisciplinary – approach on research on conflict management. Taking the Diaoyu Islands as a case, the author draws on literature from management, political sciences, war, military studies, history, etymology and culture. In the process, the author deepens, enriches and expands the Thomas‐Kilman (T‐K) model for mapping out possible solutions in resolving conflicts: not just between people at workplaces but for between states as well. For instance, the author explains why the Diaoyu Islands conflict, if not amicably resolved may well lead to obliteration (integrated as part of the model) in resolving the conflict via a nuclear outbreak. Third World War may just be sparked off with Russia aligned with China against Japan and the USA.

Design/methodology/approach

Of all the issues in management, conflict management is the most culturally embedded. Through a multi‐method approach, the author illuminates the complexity of the Diaoyu Islands case. Literature from past empirical war studies are reviewed to suggest the geography of the islands (proximity, borderless, richness of resources) makes war highly probable. Past Chinese‐Japanese hatred (utilizing visual imagery), antagonism and guanxi are reviewed in exploring their impacts on outcomes (see model). Etymological research is attempted using English, Japanese and Chinese words, characters and pictograms that are related to concepts within the T‐K model. To better grasp how young Chinese feel towards the Diaoyu Islands and the Japanese, the author conducted some field research in Harbin, China. The continuing Chinese angst against Japanese is explained through war imagery: there remains in young Chinese an unquenchable thirst for exacting revenge on the Japanese. In a search to uncover ways of resolving the dispute, a further, extended study is undertaken on ancient Chinese pictograms: for example, whether a 5,000 years old Chinese concept of compromise zhe zhong (Graphic 1; oracular bones) or splitting into halves may be relevant. The role of time in conflict management is discussed in relation to the Diaoyu Islands.

Findings

By providing the WWII visual imagery as a backdrop to Chinese‐Japanese antagonism, the author explains to readers why the Diaoyu Islands is such a complex case to resolve. Also in his fieldwork, he highlights that the younger Chinese are as equally indignant about Japanese unethical grabbing, “thieving” behaviour. In their minds, such behaviour harks back to the blatant seizure of Manchuria and Japanese puppetry of Manchukuo. Through the Diaoyu Islands case, the T‐K model and theory of conflict management is broadened, enriched and enhanced. The paper illustrates how in conflicts that involve cultures are very different from the West, for instance very ancient civilizations like China and India, authors should take a multi‐method approach and explore the issues and search for solutions far more deeply.

Originality/value

Very few scholars seek to integrate the two streams of research in resolving conflict as illustrated through this paper: management and social sciences (e.g. political sciences, military and war studies). Conflict is about people and therefore integral use of multi‐methods needs to be used.

Details

Chinese Management Studies, vol. 7 no. 1
Type: Research Article
ISSN: 1750-614X

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Article
Publication date: 2 March 2015

Biao Xie, Liyuan Wang, Hao Yang, Yanhua Wang and Mingli Zhang

In response to food scares related to high levels of agro-chemical residues sometimes found on foods, consumers in China increasingly demand for organic foods. As little…

Abstract

Purpose

In response to food scares related to high levels of agro-chemical residues sometimes found on foods, consumers in China increasingly demand for organic foods. As little is known on consumer perceptions and attitudes toward organic food products, the purpose of this paper is to gain insight into the purchase of organic food products by consumers and to explore the main factors driving this process.

Design/methodology/approach

Mixed (quantitative and qualitative) market survey approaches were used to provide a potentially deeper insight into consumer’s perspective and could help get a better picture of the complex factors involved.

Findings

The main trigger for purchasing organic food products is that consumers expect them to be healthier and safer. The respondents who have bought organic food products tend to have a higher education level and disposable incomes, be families with children and be older than those who have not bought them. The main barriers to increasing the market share of organic food products are the consumers’ lack of knowledge, the relatively high price premium and the lack of availability of organic food products. Informing consumers about unique characteristics of organic production methods, the decline in the prices of and increasing the availability of organic food products to its customers might be a promising strategy to develop the market for organic food products.

Originality/value

This paper provides a unique insight into buying behavior and attitudes of organic consumers in China. The results of the research could provide information for the organic food industry to expand its market and improve its profitability and reliability.

Details

British Food Journal, vol. 117 no. 3
Type: Research Article
ISSN: 0007-070X

Keywords

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Article
Publication date: 1 April 2010

Bai and Hudson

This study aims to benchmark Chinese TEFL academics’ research productivities, as a way to identify and, subsequently, address research productivity issues. This study…

Abstract

This study aims to benchmark Chinese TEFL academics’ research productivities, as a way to identify and, subsequently, address research productivity issues. This study investigated 182 Chinese TEFL academics’ research outputs and perceptions about research across three Chinese higher education institutions using a literature‐based survey. ANOVA, t‐tests and descriptive statistics were used to analyse data from and between the three institutions. Findings indicated that more than 70 per cent of the TEFL academics had produced no research in 10 of the 12 research output fields during 2004‐2008. The English Language and Literature Department in the national university outperformed all other departments at the three institutes for most of the research output categories. While a majority of the participants seemed to hold positive perceptions about research, t‐tests and ANOVA indicated that their research perceptions were significantly different across institutes and departments. Developing TEFL research capacity requires tertiary institutions to provide research‐learning opportunities.

Details

International Journal for Researcher Development, vol. 1 no. 3
Type: Research Article
ISSN: 2048-8696

Keywords

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Article
Publication date: 18 May 2020

Zhi Yang, Zihe Diao and Jun Kang

This study proposes a conceptual framework for analyzing customer management strategies and their effects on Internet-based platform performance based on a review of the…

Abstract

Purpose

This study proposes a conceptual framework for analyzing customer management strategies and their effects on Internet-based platform performance based on a review of the relevant literature, and provides directions for future research.

Design/methodology/approach

A literature review of relevant research articles on customer management in platform firms was conducted.

Findings

First, a framework based on the market maker view of platform firms suggests customer acquisition, customer retention and customer governance are the main customer management subprocesses toward improving platform firm performance. Second, the most studied customer management strategies for each subprocess contribute to platform performance based on the mechanisms of building customer network, developing customer network effect and managing sustainable customer networks.

Originality/value

This study proposes a framework that identifies customer acquisition, customer retention and customer governance as three key customer management subprocesses in platform firms. It also summarizes the most studied customer management strategies/actions for each subprocess. With this analytical framework, it identifies underexplored key issues in customer management for further research.

Details

Marketing Intelligence & Planning, vol. 38 no. 7
Type: Research Article
ISSN: 0263-4503

Keywords

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Article
Publication date: 19 June 2017

Qian Sun, Ming Diao, Yibing Li and Ya Zhang

The purpose of this paper is to propose a binocular visual odometry algorithm based on the Random Sample Consensus (RANSAC) in visual navigation systems.

Abstract

Purpose

The purpose of this paper is to propose a binocular visual odometry algorithm based on the Random Sample Consensus (RANSAC) in visual navigation systems.

Design/methodology/approach

The authors propose a novel binocular visual odometry algorithm based on features from accelerated segment test (FAST) extractor and an improved matching method based on the RANSAC. Firstly, features are detected by utilizing the FAST extractor. Secondly, the detected features are roughly matched by utilizing the distance ration of the nearest neighbor and the second nearest neighbor. Finally, wrong matched feature pairs are removed by using the RANSAC method to reduce the interference of error matchings.

Findings

The performance of this new algorithm has been examined by an actual experiment data. The results shown that not only the robustness of feature detection and matching can be enhanced but also the positioning error can be significantly reduced by utilizing this novel binocular visual odometry algorithm. The feasibility and effectiveness of the proposed matching method and the improved binocular visual odometry algorithm were also verified in this paper.

Practical implications

This paper presents an improved binocular visual odometry algorithm which has been tested by real data. This algorithm can be used for outdoor vehicle navigation.

Originality/value

A binocular visual odometer algorithm based on FAST extractor and RANSAC methods is proposed to improve the positioning accuracy and robustness. Experiment results have verified the effectiveness of the present visual odometer algorithm.

Details

Industrial Robot: An International Journal, vol. 44 no. 4
Type: Research Article
ISSN: 0143-991X

Keywords

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Article
Publication date: 16 May 2019

Shouyi Han, Chuang Liu, Xiaodong Sun and Kaikai Diao

This paper aims to propose an effective method to verify poles polarities of switched reluctance motors (SRMs). Different from the ways of detection poles polarities by…

Abstract

Purpose

This paper aims to propose an effective method to verify poles polarities of switched reluctance motors (SRMs). Different from the ways of detection poles polarities by permanent magnet in SRMs, the difference of self-inductance between different winding connections is used to verify the pole polarity.

Design/methodology/approach

First, the winding connections with the forward and reverse series are proposed. The magnetic circuit models are established to analyze the flux linkage of different winding connections. Then, according to the difference of inductance characteristics, including the self-inductance and the mutual inductance affected by the adjacent poles, it is theoretically feasible to verify the polarity of each pole. Finally, the proposed method is verified by the simulation and experiment on a six-phase SRM.

Findings

First, compared to the reverse series, the forward series can produce larger self-inductance when one phase is excited at the same current excitation, which can be used to verify the poles polarities of one phase with different winding connection. Second, the mutual inductance can be used to distinguish the winding connections. Third, the difference of the maximum self-inductance of the winding, which is composed of two adjacent windings, can be used to verify the polarities of the adjacent poles.

Originality/value

This paper proposes an effective method to verify poles polarities of SRMs.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 38 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

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