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Article
Publication date: 16 March 2012

Jianmin Su and Yunfeng Dong

Fractionated satellite clusters need coming together and avoiding crashing with limited random initial relative motion conditions. It is not necessary to keep the invariable…

320

Abstract

Purpose

Fractionated satellite clusters need coming together and avoiding crashing with limited random initial relative motion conditions. It is not necessary to keep the invariable configuration. The purpose of this paper is to put forward a control law which simulates organism swarm motion.

Design/methodology/approach

The motion of satellites follows three rules: coming together, velocity homology and avoiding crash. According to the rules, three control forces should be applied to satellite individuals. The final control force is the sum of three control forces. Electromagnetic dipole strengths calculation is formulated as nonlinear optimization problem. Considering control strengths have to be got in real time, iterative steps of optimization algorithm are fixed.

Findings

A control law which simulates organism swarm motion is put forward. The simulation shows the organism swarm motion simulation control law can keep fractionated satellite cluster coming together and avoiding crash. When iterative steps of optimization algorithm is fixed, the error of solve nonlinear equations is acceptable.

Originality/value

The control law is robust and easy to realize. When electromagnetic satellite cluster need not keep fixed configuration, it is a choice of control law of relative motion.

Details

Aircraft Engineering and Aerospace Technology, vol. 84 no. 2
Type: Research Article
ISSN: 0002-2667

Keywords

Available. Open Access. Open Access
Article
Publication date: 2 September 2016

Vincent Charles

342

Abstract

Details

Journal of Centrum Cathedra, vol. 9 no. 1
Type: Research Article
ISSN: 1851-6599

Available. Open Access. Open Access
Article
Publication date: 2 September 2016

Zhan Su and Jianmin Tang

It has been suggested that to be successful in the current global economy with increased competition and ever changing markets, especially in the post-crisis context, firms need…

12840

Abstract

Purpose

It has been suggested that to be successful in the current global economy with increased competition and ever changing markets, especially in the post-crisis context, firms need to focus more on innovation in exploring new ideas and designing new products to develop new markets than on cost-cutting strategies to maintain cost leadership in old markets. However, because of the lack of micro data, this conjecture has not been systematically evaluated. This paper aims to fill this important void by studying the economic performance associated with these two different business strategies using Canadian micro data.

Design/methodology/approach

The main data for our analysis are from the Survey of Innovation and Business Strategy (2009 and 2012) which is a sample-based survey of Canadian government. The authors used in this research regression models for the econometric analysis of the underlying factors for undertaking certain business strategies and how business strategies link to economic performance. They also used propensity score matching to ensure the group of firms with innovation strategy being comparable to that with cost-cutting.

Findings

The research shows that firms focusing on product innovation are indeed more productive than firms focusing on cost-cutting, although there is no evidence that these two different strategies make a difference in profitability. The first indication from the research has been that certain characteristics of Canadian firms are very useful predictors for firms to undertake product innovation. They are, among other things, the age of the firms, the single-establishment structure of the business and being multinationals.

Research limitations/implications

This empirical research opens up many interesting avenues for future research. Some other variables could be integrated into the models to increase the rate of explained variance. Moreover, because this research is based only on the case of Canadian firms and for a relatively short period of four years after the 2008 crisis, an extension to other context and to a longer period of time should be interesting.

Practical implications

The research has confirmed that Canadian firms adopting long-term business strategies based on product innovation are more productive.

Social implications

The results truly concur with the vision of the Government of Canada, like some other developed countries, on the importance of innovation and its policies in encouraging business innovation in driving the growth of the Canadian economy and improving the standard of living of country.

Originality/value

Mainly because of the lack of micro data, the existing researches have not provided solid evidence on why firms are choosing different business strategies when they are operating in the same business conditions and how the financial crisis has affected the undertaking of business strategies. They have not established a clear linkage between economic performance and different business strategies, although there has been some anecdotal evidence about their association. This study aims to bridge the knowledge gaps with theoretical and practical contributions.

Details

Journal of Centrum Cathedra, vol. 9 no. 1
Type: Research Article
ISSN: 1851-6599

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Article
Publication date: 26 January 2010

Marc Sardy, J. Mark Munoz, James Jianmin Sun and Ilan Alon

The purpose of this paper is to explore the ethical dimensions in China. It reviews the extant business ethics literature on China, collects data on ethical conduct from a large…

4365

Abstract

Purpose

The purpose of this paper is to explore the ethical dimensions in China. It reviews the extant business ethics literature on China, collects data on ethical conduct from a large Chinese university, and analyzes the data to examine emerging trends.

Design/methodology/approach

Factor analysis and multidimensional scaling (MDS) are applied to an established survey instrument after reliability is confirmed.

Findings

Principal‐components factor analysis uncovers six main factors. MDS further reduces the explanatory variables into four ethical dimensions, while increasing the number of useable observations. These four dimensions are then correlated with some demographic and psychographic variables. Results reveal four quadrants with different characteristics: Quadrant I “Unsympathetic, ethically challenged, self centered” have lower grade‐point index (GPA); Quadrant II “Ethically challenged, other directed” have higher GPA, watch more TV, and are more likely to be female; Quadrant III “Community orientation, ethically centered” are more likely to be female with higher class ranking and Quadrant IV “Challenge avoidance, controlling, religious” are more likely to have a lower GPA and lower level of religiosity.

Research limitations/implications

Inferences from this paper may be limited to the sample group. Further expansion of the paper may suggest additional insights.

Originality/value

Ethics is often ignored in China's business education. While well researched in the USA, this topic is rarely studied in China. This is of concern to businesses looking for managers in the Chinese market and for individuals and researchers who want a framework to better understand ethical dimensions of Chinese management.

Details

Competitiveness Review: An International Business Journal, vol. 20 no. 1
Type: Research Article
ISSN: 1059-5422

Keywords

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Article
Publication date: 13 December 2022

Wei Li, Hewen Ming and Jianmin Song

Although the published studies have noted that ambidextrous marketing capabilities (AMCs) could improve firm performance, they seem to ignore the differences between mature…

324

Abstract

Purpose

Although the published studies have noted that ambidextrous marketing capabilities (AMCs) could improve firm performance, they seem to ignore the differences between mature corporations and new ventures (NVs). Generally, it is impossible for NVs to simultaneously possess two types of marketing capabilities such as marketing exploitation and marketing exploration. They have to make a trade-off between the present market and the future market. This paper seeks to investigate the causal relationship between AMCs (exploitation-dominated AMCs and exploration-dominated AMCs) and entrepreneurial performance in the context of NVs. Furthermore, this paper attempts to explore the internal interaction of entrepreneurial orientation and the external interaction of competitive intensity.

Design/methodology/approach

This paper develops a theoretical framework according to configuration theory and investigates the causal relationship between AMCs (exploration-dominated AMCs and exploitation-dominated AMCs) and entrepreneurial performance as well as the moderating roles played by entrepreneurial orientation and competitive intensity based on the survey data collected from 257 Chinese NVs.

Findings

The results show that both the exploration-dominated AMCs and the exploitation-dominated AMCs have significant positive effects on entrepreneurial performance. However, the moderating roles played by entrepreneurial orientation and competitive intensity in the causal relationships are different and complicated. Specifically, entrepreneurial orientation negatively moderates the relationship between exploitation-dominated AMCs and entrepreneurial performance and positively moderates the relationship between exploration-dominated AMCs and entrepreneurial performance; competitive intensity positively moderates the relationship between exploitation-dominated AMCs and entrepreneurial performance and negatively moderates the relationship between exploration-dominated AMCs and entrepreneurial performance.

Originality/value

This paper plays a pioneering role in enriching the theoretical connotation of AMCs, improving the theoretical framework of AMCs and expanding the theoretical application of AMCs by analyzing and confirming the causal relationships between AMCs and entrepreneurial performance in the context of NVs, which is different from the previous studies. In addition, this paper also makes a valuable contribution to management practices, such as leading NVs, to match different types of AMCs with internal and external conditions for improving entrepreneurial performance.

Details

European Journal of Innovation Management, vol. 27 no. 4
Type: Research Article
ISSN: 1460-1060

Keywords

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Article
Publication date: 5 September 2018

Octaviano Rojas Luiz, Fernando Bernardi de Souza, João Victor Rojas Luiz and Daniel Jugend

The purpose of this paper is to analyze the state of the art in Critical Chain Project Management (CCPM), outlining the CCPM literature to date, in an effort to guide future…

1492

Abstract

Purpose

The purpose of this paper is to analyze the state of the art in Critical Chain Project Management (CCPM), outlining the CCPM literature to date, in an effort to guide future studies.

Design/methodology/approach

The paper is based on a bibliometric analysis using Scopus and Web of Science databases. The authors identified the principal journals, articles and authors regarding the research theme, as well as the authors elaborated co-citation and co-occurrence network maps to support the analysis.

Findings

The authors described five co-citation clusters: Fundamentals of Critical Chain, Scheduling, Operations Research, Multi-project and Network, and General Project Management. The most frequently occurring keywords were: “project management,” “critical chain,” “scheduling” and “theory of constraints.” Observing the distribution, the expression “project management” occupied a central position, connecting two other clusters, represented by the keywords “scheduling” and “critical chain.” The authors proposed an evolutive framework for the CCPM state of the art in three stages, according to the most frequent topics identified: Conceptual, Deepening of Applications and Methodological Maturity.

Originality/value

This research adopts a systematic approach based on bibliometric tools, which allows a more rigorous organization of the literature. Co-citation and keyword co-occurrence maps provide evidence of how the main themes in CCPM relate. Besides, the presented historical framework allows new research in CCPM to be directed to the most recent topics of interest that have gaps to be explored.

Details

International Journal of Managing Projects in Business, vol. 12 no. 2
Type: Research Article
ISSN: 1753-8378

Keywords

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Article
Publication date: 3 May 2016

Yifei Tong, Ruiwen Zhao, Wei Ye and Dongbo Li

Crane plays a very important role in national economy with greatly reduced labor intensity, improved production efficiency and promoted social development as an indispensable…

366

Abstract

Purpose

Crane plays a very important role in national economy with greatly reduced labor intensity, improved production efficiency and promoted social development as an indispensable auxiliary tool and process equipment. Therefore, its energy consumption becomes an unavoidable topic and in fact, energy consumption of crane is very huge. It has been proved to be the most cost-effective way for reducing energy consumption to establish and implement new energy efficiency standard. Thus, it is necessary to analyze and evaluate the energy efficiency for overhead crane so as to propose a new energy efficiency standard. The paper aims to discuss these issues.

Design/methodology/approach

In this paper, four kinds of energy consumption sources of overhead crane is considered, based on which, an energy efficiency grading model for overhead crane based on BP neural network is proposed. Second, DS evidential theory is analyzed and based on it, an energy efficiency evaluation model based on BP neural network and DS evidential theory is proposed. The evaluation procedure is discussed in detail. Then, a case is demonstrated how the evaluation is carried out.

Findings

If overhead cranes with different energy consumptions need to be graded according to energy efficiency, the criterions to establish the energy efficiency labels for overhead cranes is proposed in this paper.

Practical implications

The research results can provide energy efficiency standard proposal of overhead crane for relative departments to monitor the design, manufacturing and use of overhead crane.

Originality/value

An energy efficiency grading model for overhead crane based on BP neural network is proposed. An energy efficiency evaluation model based on BP neural network and DS evidential theory is proposed.

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Article
Publication date: 20 December 2019

Yang Liu

The purpose of this paper is to study the users’ willingness for acceptance of background music service in university libraries based on intelligent campus and to improve the…

415

Abstract

Purpose

The purpose of this paper is to study the users’ willingness for acceptance of background music service in university libraries based on intelligent campus and to improve the intelligence level of university libraries and provide a reference for the atmosphere.

Design/methodology/approach

The research method of combining theory with practice is applied, and field distribution method and network survey method are used. An algorithm model is established to investigate relevant users, and statistical analysis of the data obtained is made.

Findings

The results show that in the questionnaire survey, girls are more inclined to study in the environment of library than boys; for grade, sophomores and juniors are more inclined to go to library than other grades; through model analysis, the target users are more inclined to choose light music as background music, accounting for 65 percent. Heavy metals and other users have fewer choices, accounting for only 8 percent.

Research limitations/implications

This questionnaire is mainly filled out in paper form on site, so it only selects some nearby students as the survey objects. However, the condition of university libraries across the country must be different due to regional differences, disciplinary differences and funding differences, so the representative sample may be insufficient. Therefore, in the follow-up research, the scope of the survey should be expanded, especially the geographical scope. It should collect as much data as possible for students of different types and genders, so as to expand the applicable scope and explanatory power of the model.

Practical implications

Starting from the library scene, this research studies the acceptance intention of users of background music service in the library, which provides reference for the improvement of the intellectualization of university libraries and their atmosphere. Although different university libraries have different operation modes and service characteristics, the conclusions of this study have certain practical significance for the library industry because the library industry has many commonalities.

Originality/value

At present, the research on the background music service of University Library based on the smart campus is relatively rare and limited to the theoretical stage. Few people have deeply explored the background music service of the library, and no scholars have quantitatively studied it. In this study, based on the questionnaire and from the perspective of users, the acceptance intention of background music service users is investigated, which provides a reference for the improvement of the intellectualization of university libraries and its atmosphere. It is a research topic of great practical significance.

Details

Library Hi Tech, vol. 40 no. 1
Type: Research Article
ISSN: 0737-8831

Keywords

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Article
Publication date: 31 January 2018

Michael Arias, Rodrigo Saavedra, Maira R. Marques, Jorge Munoz-Gama and Marcos Sepúlveda

Human resource allocation is considered a relevant problem in business process management (BPM). The successful allocation of available resources for the execution of process…

3441

Abstract

Purpose

Human resource allocation is considered a relevant problem in business process management (BPM). The successful allocation of available resources for the execution of process activities can impact on process performance, reduce costs and obtain a better productivity of the resources. In particular, process mining is an emerging discipline that allows improvement of the resource allocation based on the analysis of historical data. The purpose of this paper is to provide a broad review of primary studies published in the research area of human resource allocation in BPM and process mining.

Design/methodology/approach

A systematic mapping study (SMS) was conducted in order to classify the proposed approaches to allocate human resources. A total of 2,370 studies published between January 2005 and July 2016 were identified. Through a selection protocol, a group of 95 studies were selected.

Findings

Human resource allocation is an emerging research area that has been evolving over time, generating new proposals that are increasingly applied to real case studies. The majority of proposed approaches relate to the period 2011-2016. Journals and conference proceedings are the most common venues. Validation research and evaluation research are the most common research types. There are two main evaluation methods: simulation and case studies.

Originality/value

This study aims to provide an initial assessment of the state of the art in the research area of human resource allocation in BPM and process mining. To the best of the authors’ knowledge, this is the first research that has been conducted to date that generates a SMS in this research area.

Details

Management Decision, vol. 56 no. 2
Type: Research Article
ISSN: 0025-1747

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Article
Publication date: 13 October 2021

Syed Asif Raza and Abdul Hameed

The findings of this study have lightened the focal research areas in maintenance planning and scheduling. These also served as effective guidelines for future studies in this…

1030

Abstract

Purpose

The findings of this study have lightened the focal research areas in maintenance planning and scheduling. These also served as effective guidelines for future studies in this area. This research, therefore, contributes in fulfilling the gap by carrying out an SLR of contemporary research studies in the area of models for maintenance planning and scheduling. At present, SLR rooted in BA has not been carried focusing on a survey over models for maintenance planning and scheduling. SLR uses advanced scientific methodologies from BA tools to unveil thematic structures.

Design/methodology/approach

We have systematically reviewed over 1,021 peer-reviewed journal articles. Advanced contemporary tools from Bibliometric Analysis (BA) are used to perform a Systematic Literature Review (SLR). First, exploratory analysis is presented, highlighting the influential authors, sources and region amongst other key indices. Second, the large bibliographical data is visualized using co-citation network analyses, and research clusters (themes) are identified. The co-citation network is extended into a dynamic co-citation network and unveils the evolution of the research clusters. Last, cluster-based content analysis and historiographical analysis is carried out to predict the prospect of future research studies.

Findings

BA tools first outlined an exploratory analysis that noted influential authors, production countries, top-cited papers and frequent keywords. Later, the bibliometric data of over 1,021 documents is visualized using co-citation network analyses. Later, a dynamic co-citation analysis identified the evolution of research clusters over time. A historiographical direct citation analysis also unveils potential research directions. We have clearly observed that there are two main streams of maintenance planning and scheduling applications. The first has focused on joint maintenance and operations on machines. The second focused on integrated production and maintenance models in an echelon setting for unrealizable production facilities.

Originality/value

There are many literature review-based research studies that have contributed to maintenance scheduling research surveys. However, most studies have adopted traditional approaches, which often fall short in handling large bibliometric data and therefore suffer from selection biases from the authors. As a result, in this area, the existing reviews could be non-comprehensive. This study bridges the research gap by conducting an SLR of maintenance models, which to the best of our knowledge, has not been carried out before this study.

Details

Journal of Quality in Maintenance Engineering, vol. 28 no. 4
Type: Research Article
ISSN: 1355-2511

Keywords

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