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1 – 10 of over 2000Min Wan, Mou Chen and Mihai Lungu
This paper aims to study a neural network-based fault-tolerant controller to improve the tracking control performance of an unmanned autonomous helicopter with system uncertainty…
Abstract
Purpose
This paper aims to study a neural network-based fault-tolerant controller to improve the tracking control performance of an unmanned autonomous helicopter with system uncertainty, external disturbances and sensor faults, using the prescribed performance method.
Design/methodology/approach
To ensure that the tracking error satisfies the prescribed performance, the authors adopt an error transformation function method. A control scheme based on the neural network and high-order disturbance observer is designed to guarantee the boundedness of the closed-loop system. A simulation is performed to prove the validity of the control scheme.
Findings
The developed adaptive fault-tolerant control method makes the system with sensor fault realize tracking control. The error transformation function method can effectively handle the prescribed performance requirements. Sensor fault can be regarded as a type of system uncertainty. The uncertainty can be approximated accurately using neural networks. A high-order disturbance observer can effectively suppress compound disturbances.
Originality/value
The tracking performance requirements of unmanned autonomous helicopter system are considered in the design of sensor fault-tolerant control. The inequality constraint that the output tracking error must satisfy is transformed into an unconstrained problem by introducing an error transformation function. The fault state of the velocity sensor is considered as the system uncertainty, and a neural network is used to approach the total uncertainty. Neural network estimation errors and external disturbances are treated as compound disturbances, and a high-order disturbance observer is constructed to compensate for them.
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Min Wan, Suzanne Zivnuska and Matthew Valle
The purpose of this study is to explore the mediating effect of moral disengagement in the relationship between mindfulness and unethical behaviors. The authors also explored the…
Abstract
Purpose
The purpose of this study is to explore the mediating effect of moral disengagement in the relationship between mindfulness and unethical behaviors. The authors also explored the moderating effect of perceptions of politics on the mediational chain.
Design/methodology/approach
The authors administrated time-lagged surveys at two time periods separated by six weeks. Respondents were 206 full-time employees working in the USA. Hierarchical, moderated multiple regression analyzes were used to test the mediation and moderation effects.
Findings
Results showed that mindfulness reduced destructive deviant behavior and unethical pro-organizational behavior through moral disengagement and the mediation effects were weaker when employees’ perceptions of politics were stronger.
Research limitations/implications
The results indicate that mindfulness and perceptions of organizational politics combine to have profound impacts on employee unethical behaviors. Organizations seeking to minimize the occurrence of deviance and unethical behaviors may do well to support employee mindfulness and as well as minimizing organizational politics. The findings suggest that the political context has a negative impact on even the behavior of mindful employees. Therefore, building mindfulness while simultaneously reducing politics are equally important goals.
Originality/value
Our study extends the theoretical development of mindfulness research by examining the interactive effects of perceptions of organizational politics and mindfulness and broadens the theoretical rationale for explaining the linkages between mindfulness and unethical behaviors.
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Min (Maggie) Wan, Yejun Zhang, Margaret A. Shaffer, Mingze Li and Guanglei Zhang
Drawing on job demands-resources theory (Bakker and Demerouti, 2017) and conservation of resources theory (Hobfoll, 1989), this study aims to investigate the roles of work task…
Abstract
Purpose
Drawing on job demands-resources theory (Bakker and Demerouti, 2017) and conservation of resources theory (Hobfoll, 1989), this study aims to investigate the roles of work task conflict and coworker support in the experience of daily work-family balance. In particular, this study theorizes work-family balance as a higher-order construct, including both psychological (work-family balance satisfaction) and social (work-family balance effectiveness) dimensions.
Design/methodology/approach
The authors tested the proposed model using daily diary survey data collected from 50 full-time corporate employees across five consecutive workdays in a week. The hypotheses were tested using multilevel modeling analyses.
Findings
Analyses show that work task conflict impedes employees’ work-family balance on a daily basis. Results also support the moderating role of coworker support, such that the negative relationship between work task conflict and work-family balance is weaker when coworker support is high.
Originality/value
This research contributes to the literature by considering work-family balance as a higher-order construct. Further, this research advances theoretical knowledge of the interpersonal predictors of work-family balance. This study also expands previous work by examining the dynamic relationships between interpersonal events and work-family balance.
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Yejun Zhang and Min (Maggie) Wan
Psychological safety climate has been commonly conceptualized as a facilitative team property. Despite the literature review and meta-analysis conducted recently, little is known…
Abstract
Purpose
Psychological safety climate has been commonly conceptualized as a facilitative team property. Despite the literature review and meta-analysis conducted recently, little is known about the potential dark side of psychological safety climate. The purpose of this paper is to develop a theoretical framework to advance our understanding of both the bright and dark sides of psychological safety.
Design/methodology/approach
Drawing on extant theories and previous literature, the authors propose a conceptual framework of the mechanisms and boundary conditions underlying the relationship between psychological safety climate and dysfunctional team behavior.
Findings
The authors propose that the relationship between psychological safety climate and dysfunctional behaviors in the team is directly contingent on psychological safety climate strength, and indirectly contingent on task interdependence, group faultlines, group conflict asymmetry and team power distance differentiation.
Originality/value
First, the authors attempt to expand psychological safety climate literature by considering its potential damaging outcomes. Second, they contribute to the theory of psychological safety climate by suggesting a theoretical model consisting of the boundary conditions wherein psychological safety climate could reduce team effectiveness. Finally, the authors incorporate climate strength into the psychological safety literature to probe the antecedents of psychological safety climate strength and when it matters to the subsequent negative outcomes.
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Yim‐Yu Wong, Thomas E. Maher, Joel D. Nicholson and Chi‐wen Chen
Assesses the effects of the Asian economic crisis on Taiwan and identifies some reasons why it has been less dramatically affected than other Asian countries. Discusses its actual…
Abstract
Assesses the effects of the Asian economic crisis on Taiwan and identifies some reasons why it has been less dramatically affected than other Asian countries. Discusses its actual and planned policies aimed at strengthening the economy further by maintaining currency stability, improving competitive strengths in both hi‐tech industries and manufacturing, entering new export markets, stimulating domestic demand and reforming financial institutions and regulations. Recognizes the political threats it faces but believes that increasing trade with and investment in China has reduced them.
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Leisa Reinecke Flynn, Ronald E. Goldsmith and Wan‐Min Kim
Three theoretical constructs that appear in many models of consumer behaviour and are of central importance to fashion marketing and management are enduring product involvement…
Abstract
Three theoretical constructs that appear in many models of consumer behaviour and are of central importance to fashion marketing and management are enduring product involvement, opinion seeking and subjective product knowledge. Both basic and applied market research, however, have lacked valid, reliable and standardised measures of these variables. Recent published studies have presented multi‐item scales that fill this gap in fashion research methodology. All three scales, however, were developed using US data, chiefly students. This paper presents the results of three surveys of Korean adult (n = 479) and student (n = 387) consumers as well as US adult consumers (n = 318) that support the reliability and validity of all three scales and show their applicability for cross‐cultural fashion research.
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Jin-Soo Lee and Chia-Hao Chiang
The purpose of this paper is to explore a multidimensional quality scale for the identification of incentive travel attributes.
Abstract
Purpose
The purpose of this paper is to explore a multidimensional quality scale for the identification of incentive travel attributes.
Design/methodology/approach
The combined qualitative and quantitative method was used.
Findings
The resulting quality scale comprises 32 items with eight factors: image and attractions, accessibility, site environment, hotel facilities, opportunities for networking and sense of achievement/reward, program, specially arranged program and local people.
Practical implications
The results of this study provide insights for practitioners in Taiwan, particularly the government bodies concerned and incentive event organizers, and thus assist the practitioners in making strategic plans and decisions to ensure event quality and overall attendee satisfaction.
Originality/value
The value of this study is the first attempt to develop and validate a scale for capturing the quality of incentive events.
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Mumtaz Ali Memon, Hiram Ting, Christian Ringle, Jun-Hwa Cheah and Nuttawuth Muenjohn
Kedong Yin, Yun Cao, Shiwei Zhou and Xinman Lv
The purposes of this research are to study the theory and method of multi-attribute index system design and establish a set of systematic, standardized, scientific index systems…
Abstract
Purpose
The purposes of this research are to study the theory and method of multi-attribute index system design and establish a set of systematic, standardized, scientific index systems for the design optimization and inspection process. The research may form the basis for a rational, comprehensive evaluation and provide the most effective way of improving the quality of management decision-making. It is of practical significance to improve the rationality and reliability of the index system and provide standardized, scientific reference standards and theoretical guidance for the design and construction of the index system.
Design/methodology/approach
Using modern methods such as complex networks and machine learning, a system for the quality diagnosis of index data and the classification and stratification of index systems is designed. This guarantees the quality of the index data, realizes the scientific classification and stratification of the index system, reduces the subjectivity and randomness of the design of the index system, enhances its objectivity and rationality and lays a solid foundation for the optimal design of the index system.
Findings
Based on the ideas of statistics, system theory, machine learning and data mining, the focus in the present research is on “data quality diagnosis” and “index classification and stratification” and clarifying the classification standards and data quality characteristics of index data; a data-quality diagnosis system of “data review – data cleaning – data conversion – data inspection” is established. Using a decision tree, explanatory structural model, cluster analysis, K-means clustering and other methods, classification and hierarchical method system of indicators is designed to reduce the redundancy of indicator data and improve the quality of the data used. Finally, the scientific and standardized classification and hierarchical design of the index system can be realized.
Originality/value
The innovative contributions and research value of the paper are reflected in three aspects. First, a method system for index data quality diagnosis is designed, and multi-source data fusion technology is adopted to ensure the quality of multi-source, heterogeneous and mixed-frequency data of the index system. The second is to design a systematic quality-inspection process for missing data based on the systematic thinking of the whole and the individual. Aiming at the accuracy, reliability, and feasibility of the patched data, a quality-inspection method of patched data based on inversion thought and a unified representation method of data fusion based on a tensor model are proposed. The third is to use the modern method of unsupervised learning to classify and stratify the index system, which reduces the subjectivity and randomness of the design of the index system and enhances its objectivity and rationality.
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Man has been seeking an ideal existence for a very long time. In this existence, justice, love, and peace are no longer words, but actual experiences. How ever, with the American…
Abstract
Man has been seeking an ideal existence for a very long time. In this existence, justice, love, and peace are no longer words, but actual experiences. How ever, with the American preemptive invasion and occupation of Afghanistan and Iraq and the subsequent prisoner abuse, such an existence seems to be farther and farther away from reality. The purpose of this work is to stop this dangerous trend by promoting justice, love, and peace through a change of the paradigm that is inconsistent with justice, love, and peace. The strong paradigm that created the strong nation like the U.S. and the strong man like George W. Bush have been the culprit, rather than the contributor, of the above three universal ideals. Thus, rather than justice, love, and peace, the strong paradigm resulted in in justice, hatred, and violence. In order to remove these three and related evils, what the world needs in the beginning of the third millenium is the weak paradigm. Through the acceptance of the latter paradigm, the golden mean or middle paradigm can be formulated, which is a synergy of the weak and the strong paradigm. In order to understand properly the meaning of these paradigms, however, some digression appears necessary.
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