Yuhui Wei, Zhaowei Su, Huashan Lu and Xue Mei Ding
The purpose of this paper is to develop an efficient termination control strategy of air-vented dryer in term of energy saving, improving smoothness and reducing microscopic…
Abstract
Purpose
The purpose of this paper is to develop an efficient termination control strategy of air-vented dryer in term of energy saving, improving smoothness and reducing microscopic damage of fiber.
Design/methodology/approach
A simple, low cost termination control strategy is developed by testing the instantaneous humidity of exhaust air and then deducing the drying degree of fabric in process. The practicability evaluation of this novel strategy was investigated by using both experimental and mathematical approaches. The effect of termination control strategy on drying efficiency and fabric apparent properties were also discussed.
Findings
Termination control strategy significantly affects drying time, energy consumption, smoothness and microscopic of fiber. Specially, a novel termination control strategy that the combination of equilibrium moisture content of fabric in ambient environment and relative humidity of exhaust air in exhaust duct is workable and can save 25.2 percent of energy consumption, 26.7 percent of the drying time and improve 0.7 grade of the appearance smoothness, as well as significantly reduce the microscopic damage of fiber compare to the original control strategy of dryer. This indicates possible ways to minimize drying energy consumption and dryer damage by reducing unnecessary migrate out of the water from the clothes.
Practical implications
The paper is helpful in not only the development of new drying product but also the optimization of appearance smoothness of fabric after drying and reduce the microscopic damage of fiber.
Originality/value
A novel termination control strategy of dryer is applied to improve drying efficiency of dryer and reduce fabric damage.
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Shengfei Shi, Jianzhong Li, Chaokun Wang and Yuhui Wu
The purpose of this paper is to propose a novel resource management strategy, which needs no special frameworks and directory servers.
Abstract
Purpose
The purpose of this paper is to propose a novel resource management strategy, which needs no special frameworks and directory servers.
Design/methodology/approach
The key idea is to piggyback a little extra packet header on the normal routing message by resource providers randomly. The clients can obtain the resource information gradually and need no dedicated resource queries.
Findings
The results of simulation confirm the good performance of our algorithms in different situations in terms of query latency and power consumption.
Originality/value
A novel resource management strategy, which needs no special frameworks and directory servers. The approach can be used in many current routing protocols. The quality of service issue is also considered for resource discovery algorithm and broadcasting method.
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Xiaohong Zhang, Gaowen Tang and Zhaohong Lin
Based on the theory of “optimal contracting approach” and “the managerial power approach”, this paper aims to investigate whether senior executives of listed companies in China…
Abstract
Purpose
Based on the theory of “optimal contracting approach” and “the managerial power approach”, this paper aims to investigate whether senior executives of listed companies in China make use of their power to gain their own private benefits. The paper also compares compensation contracts between state- and private-owned enterprises to test whether there is a significant difference between senior executives from different ownership types of enterprises in terms of compensation contracts.
Design/methodology/approach
The paper raises four hypotheses based on the theories of “company agency”, “optimal contracting approach” and “managerial power approach”. After that, 5,680 A-share-listed companies of stock market in Shanghai and in Shenzhen Stock Market from 2008 to 2012 were taken as research samples to conduct a series of research analysis, including t-test, reliability analysis and regression analysis, with the help of SPSS 18.0.
Findings
The senior executives of listed companies in China could make use of their power to increase their own salary to gain power pay and, at the same time, company performance, company size and other factors that are important to influence the executive compensation. This paper further argues that senior executives of private-owned listed companies are more likely to use their power to obtain power pay and increase their own compensation. Additionally, the agency costs of Chinese listed companies are negatively related to the performance pay of senior executives, whereas there is no obvious negative correlation with the power pay of senior executives.
Practical implications
This paper takes multiple, in-depth approaches to study the relationship among managerial power, agency cost and executive compensation and to find out the differences in compensation contracts of senior executives between private-owned listed companies and state-owned companies. It also provides necessary suggestions to ensure the interests of stockholders, such as: optimizing the management structure of listed companies; improving the transparence of information disclosure of listed companies; establishing effective mechanism of incentive and constraint; and improving and standardizing the market of professional managers.
Social implications
The compensation contract of senior executives in China is critical to enhance enterprises’ performance, and it will become an important factor that will facilitate the interests of stockholders and management. However, this paper argues that some phenomena of over-payment of senior executives in listed companies cannot be explained by the theory of “optimal contracting approach”, but it is necessary and important to compare the differences of compensation contract of senior executives between private-owned listed companies and state-owned companies. A series of findings are proposed in this paper.
Originality/value
This paper made use of a principal analysis to extract the main factors that could represent the managerial power from different angles. In addition, this paper also compared the differences between compensation contracts of senior executives between private-owned listed companies and state-owned companies. Additionally, in this paper, the compensation of senior executives was divided into “power compensation” and “performance compensation”, which were used to test the relationship with the management cost of companies.
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Shuo Wang, Wei Huang, Yuhui Gao, Sean Ansett and Shiyong Xu
The relationship between socially responsible leaders, the key driver of corporate social responsibility (CSR) practices, and organizational financial performance is a salient…
Abstract
Purpose
The relationship between socially responsible leaders, the key driver of corporate social responsibility (CSR) practices, and organizational financial performance is a salient issue in the global context for both CSR scholars and practitioners. The purpose of this paper is to provide much-needed insights into the interplay of responsible leadership, CSR practices, and organizational outcomes.
Design/methodology/approach
It analyses 85 CEOs’ behaviors and their companies’ performance in a two-year database. It thereby enriches understanding of how leaders’ socially responsible decisions impact upon CSR engagement and firm performance.
Findings
The results suggest that socially responsible leaders were positively related with organizational performance of return on equity (ROE). The aspects of integrity, morality, and stakeholder relationship aspects of responsible leadership are closely related to CSR. However, CSR practices were negatively related to ROA and ROE. It implies that in China CSR activities could not boost organizational performance in the short term, at least in two years.
Research limitations/implications
Our research has clear limitations. First, most selected firms are renowned large corporations, state-owned, or private enterprises. Foreign-owned enterprises are excluded. Second, the evaluation of CSP is based on the content analysis of firms’ annual CSR reports. Our research has clear limitations. First, most selected firms are renowned large corporations, state-owned, or private enterprises. Foreign-owned enterprises are excluded. Second, the evaluation of CSP is based on the content analysis of firms’ annual CSR reports.
Practical implications
Our research has practical implications for the business world. First, CSR practices in China shall be conducted in a strategic way. Second, responsible leadership is of significance for the Chinese MNCs that are overseas to build trustful stakeholder relations with local stakeholders.
Originality/value
Based on the data analysis, this study provides in-depth discussion of CSR situation in China and its relationship with firm performance, which is one of the first studies to examine responsible leadership in Chinese context and investigate the relationship between responsible leadership and organizational performance.
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Zhongge Guo, Yunxin Li and Yuhui Wang
To suppress fatigue damage and ensure structural safety, this paper aims to analyze the effect of the damage accumulation on the aeroelastic model of an air-breathing hypersonic…
Abstract
Purpose
To suppress fatigue damage and ensure structural safety, this paper aims to analyze the effect of the damage accumulation on the aeroelastic model of an air-breathing hypersonic flight vehicle (AHFV).
Design/methodology/approach
Initially, by constructing the modified longitudinal elastic model of an AHFV, the stress condition of the fuselage is analyzed, and the model differences with the rigid body are studied. Then, a new damage dynamic model is presented to describe the damage dynamic evolution. Finally, combining the damage model and the longitudinal model of the AHFV, the key variables affecting the damage accumulation are determined.
Findings
It is demonstrated that the elastic deformation must be considered when analyzing the damage characteristics of the fuselage and to determine the key variables that affect the damage accumulation, which provides a more accurate reference for improving the structural reliability and lifespan of AHFVs.
Originality/value
The novelty of this paper comes from the application of the force and stress models for the damage evolution of the AHFV and the development of a new damage model for the entire body with the elastic dynamics of AHFVs.
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Changlong Ma, Yuhui Ge and Heng Zhao
Although strategic scholars have made great effects to exploring the moderating roles of team interaction in explaining the effect of top management team (TMT) diversity, they…
Abstract
Purpose
Although strategic scholars have made great effects to exploring the moderating roles of team interaction in explaining the effect of top management team (TMT) diversity, they have adopted seemingly conflicting theoretical perspectives to explain how it works. Drawing on ideas from the threat rigidity theory, the authors integrated these perspectives by proposing a contingency model in which the relationships between TMT diversity and adaptive firm performance depend on the matching between the internal context (i.e. overlapping team tenure) and external context (i.e. severity of threat).
Design/methodology/approach
This study sampled 579 Chinese A-share listed companies that have been severely affected by the COVID-19 pandemic, and multilevel linear regression analysis was used to test the hypothesis.
Findings
Results provided support for this hypothesis. Specifically, the interaction between TMT age/tenure diversity and overlapping team tenure is significant only when the severity of threat is high, while the interaction between TMT functional diversity and overlapping team tenure is significant only when the severity of threat is low.
Originality/value
The results of this study provide a comprehensive perspective to predict the performance impact of team diversity and contribute to diversity research and practice.
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Yuchen Xi, Qinying Wang, Xinyu Tan, Xingshou Zhang, Lijin Dong, Yuhui Song, Liyang Liu and Dezhi Zeng
The purpose of this work is to design the wire beam electrode (WBE) of P110 steel and study its corrosion behavior and mechanism under high temperature and pressure.
Abstract
Purpose
The purpose of this work is to design the wire beam electrode (WBE) of P110 steel and study its corrosion behavior and mechanism under high temperature and pressure.
Design/methodology/approach
Packaging materials of the new type P110 steel WBE and high pressure stable WBE structure were designed. A metallurgical microscope (XJP-3C) and scanning electron microscopy (EV0 MA15 Zeiss) with an energy dispersive spectrometer were used to analyze the microstructure and composition of the P110 steel. The electrochemical workstation (CS310, CorrTest Instrument Co., Ltd) with a WBE potential and current scanner was used to analyze the corrosion mechanism of P110 steel.
Findings
According to the analysis of Nyquist plots at different temperatures, the corrosion resistance of P110 steel decreases with the increase of temperature under atmospheric pressure. In addition, Rp of P110 steel under high pressure is maintained in the range of 200 ∼ 375 Ωcm2, while that under atmospheric pressure is maintained in the range of 20 ∼ 160 Ωcm2, indicating that the corrosion products on P110 steel under high pressure is denser, which improves the corrosion resistance of P110 steel to a certain extent.
Originality/value
The WBE applied in high temperature and pressure environment is in blank. This work designed and prepared a WBE of P110 steel for high temperature and pressure environment, and the corrosion mechanism of P110 steel was revealed by using the designed WBE.
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Zijing Ye, Huan Li and Wenhong Wei
Path planning is an important part of UAV mission planning. The main purpose of this paper is to overcome the shortcomings of the standard particle swarm optimization (PSO) such…
Abstract
Purpose
Path planning is an important part of UAV mission planning. The main purpose of this paper is to overcome the shortcomings of the standard particle swarm optimization (PSO) such as easy to fall into the local optimum, so that the improved PSO applied to the UAV path planning can enable the UAV to plan a better quality path.
Design/methodology/approach
Firstly, the adaptation function is formulated by comprehensively considering the performance constraints of the flight target as well as the UAV itself. Secondly, the standard PSO is improved, and the improved particle swarm optimization with multi-strategy fusion (MFIPSO) is proposed. The method introduces class sigmoid inertia weight, adaptively adjusts the learning factors and at the same time incorporates K-means clustering ideas and introduces the Cauchy perturbation factor. Finally, MFIPSO is applied to UAV path planning.
Findings
Simulation experiments are conducted in simple and complex scenarios, respectively, and the quality of the path is measured by the fitness value and straight line rate, and the experimental results show that MFIPSO enables the UAV to plan a path with better quality.
Originality/value
Aiming at the standard PSO is prone to problems such as premature convergence, MFIPSO is proposed, which introduces class sigmoid inertia weight and adaptively adjusts the learning factor, balancing the global search ability and local convergence ability of the algorithm. The idea of K-means clustering algorithm is also incorporated to reduce the complexity of the algorithm while maintaining the diversity of particle swarm. In addition, the Cauchy perturbation is used to avoid the algorithm from falling into local optimum. Finally, the adaptability function is formulated by comprehensively considering the performance constraints of the flight target as well as the UAV itself, which improves the accuracy of the evaluation model.
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The purpose of this paper is to explore the reasons for the high‐frequency switches of lead underwriters by Chinese listed companies in their seasoned equity offerings. It…
Abstract
Purpose
The purpose of this paper is to explore the reasons for the high‐frequency switches of lead underwriters by Chinese listed companies in their seasoned equity offerings. It contributes to the literature by filling the gap and providing evidence that institutional and non‐market factors could affect listed companies' decisions to switch their lead underwriters in the Chinese capital market.
Design/methodology/approach
This paper employs a numerical measure of listed companies' loyalty to evaluate their frequency of switching lead underwriters, and employs a Logit model and an OLS model to identify the key determinants of switching lead underwriters by Chinese listed companies.
Findings
It is observed that the frequency of switching lead underwriters is very high among Chinese listed companies for their seasoned offerings. It is also found that underwriters' deficient reputation and the lack of industrial experience, together with the depreciation of relationship‐specific assets, could have important impacts on lead underwriters being frequently switched in China. Besides, the frequent switches of lead underwriters could also be attributable to the non‐market supervision and regulatory influences by Chinese authorities over the security underwriting market.
Originality/value
This paper could help further the understanding of the factors that could explain the listed companies' frequent switches of their lead underwriters for their seasoned offerings in China. In addition, this paper has policy implications on how to improve the listed companies' loyalty for regulators in China. These implications could help improve the regulatory environment and promote the overall performance of the Chinese security underwriting market.
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Wei He, Yuanming Xu, Yaoming Zhou and Qiuyue Li
This paper aims to introduce a method based on the optimizer of the particle swarm optimization (PSO) algorithm to improve the efficiency of a Kriging surrogate model.
Abstract
Purpose
This paper aims to introduce a method based on the optimizer of the particle swarm optimization (PSO) algorithm to improve the efficiency of a Kriging surrogate model.
Design/methodology/approach
PSO was first used to identify the best group of trend functions and to optimize the correlation parameter thereafter.
Findings
The Kriging surrogate model was used to resolve the fuselage optimization of an unmanned helicopter.
Practical implications
The optimization results indicated that an appropriate PSO scheme can improve the efficiency of the Kriging surrogate model.
Originality/value
Both the STANDARD PSO and the original PSO algorithms were chosen to show the effect of PSO on a Kriging surrogate model.